Make fast class files reading mode default in compiler tests

This makes sense because this mode is the default in the production
compiler. Forgetting to enable it where necessary led to different
bizarre test failures, see for example changes around 3fee84b966 and
KT-34826

compiler/testData/ir/irText/expressions/breakContinueInWhen.fir.txt

@@ -137,5 +137,5 @@ FILE fqName:<root> fileName:/breakContinueInWhen.kt
               arg0: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null
               arg1: CONST String type=kotlin.String value="1;2;"
           then: THROW type=kotlin.Nothing
-            CONSTRUCTOR_CALL 'public constructor <init> (detailMessage: kotlin.Any?) declared in java.lang.AssertionError' type=java.lang.AssertionError origin=null
-              detailMessage: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null
+            CONSTRUCTOR_CALL 'public constructor <init> (p0: kotlin.Any?) declared in java.lang.AssertionError' type=java.lang.AssertionError origin=null
+              p0: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null

compiler/testData/ir/irText/expressions/breakContinueInWhen.txt

@@ -144,5 +144,5 @@ FILE fqName:<root> fileName:/breakContinueInWhen.kt
               arg0: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null
               arg1: CONST String type=kotlin.String value="1;2;"
           then: THROW type=kotlin.Nothing
-            CONSTRUCTOR_CALL 'public constructor <init> (detailMessage: kotlin.Any?) declared in java.lang.AssertionError' type=java.lang.AssertionError origin=null
-              detailMessage: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null
+            CONSTRUCTOR_CALL 'public constructor <init> (p0: kotlin.Any?) declared in java.lang.AssertionError' type=java.lang.AssertionError origin=null
+              p0: GET_VAR 'var s: kotlin.String [var] declared in <root>.testContinueDoWhile' type=kotlin.String origin=null

compiler/testData/ir/irText/expressions/coercionToUnit.fir.txt

@@ -19,9 +19,9 @@ FILE fqName:<root> fileName:/coercionToUnit.kt
         element: CONST String type=kotlin.String value=""
   FUN name:test3 visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
-      CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit? origin=null
+      CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit? origin=null
         $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-        x: CONST String type=kotlin.String value="Hello,"
-      CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit? origin=null
+        p0: CONST String type=kotlin.String value="Hello,"
+      CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit? origin=null
         $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-        x: CONST String type=kotlin.String value="world!"
+        p0: CONST String type=kotlin.String value="world!"

compiler/testData/ir/irText/expressions/coercionToUnit.txt

@@ -33,9 +33,9 @@ FILE fqName:<root> fileName:/coercionToUnit.kt
               then: CONST Null type=kotlin.Nothing? value=null
             BRANCH
               if: CONST Boolean type=kotlin.Boolean value=true
-              then: CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+              then: CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
                 $this: GET_VAR 'val tmp_0: java.io.PrintStream? [val] declared in <root>.test3' type=java.io.PrintStream? origin=null
-                x: CONST String type=kotlin.String value="Hello,"
+                p0: CONST String type=kotlin.String value="Hello,"
       TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
         BLOCK type=kotlin.Unit? origin=SAFE_CALL
           VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:java.io.PrintStream? [val]
@@ -48,6 +48,6 @@ FILE fqName:<root> fileName:/coercionToUnit.kt
               then: CONST Null type=kotlin.Nothing? value=null
             BRANCH
               if: CONST Boolean type=kotlin.Boolean value=true
-              then: CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+              then: CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
                 $this: GET_VAR 'val tmp_1: java.io.PrintStream? [val] declared in <root>.test3' type=java.io.PrintStream? origin=null
-                x: CONST String type=kotlin.String value="world!"
+                p0: CONST String type=kotlin.String value="world!"

compiler/testData/ir/irText/expressions/implicitCastOnPlatformType.txt

@@ -2,5 +2,5 @@ FILE fqName:<root> fileName:/implicitCastOnPlatformType.kt
   FUN name:test visibility:public modality:FINAL <> () returnType:kotlin.String
     BLOCK_BODY
       RETURN type=kotlin.Nothing from='public final fun test (): kotlin.String declared in <root>'
-        CALL 'public open fun getProperty (key: kotlin.String?): kotlin.String? declared in java.lang.System' type=kotlin.String? origin=null
-          key: CONST String type=kotlin.String value="test"
+        CALL 'public open fun getProperty (p0: kotlin.String?): kotlin.String? declared in java.lang.System' type=kotlin.String? origin=null
+          p0: CONST String type=kotlin.String value="test"

compiler/testData/ir/irText/expressions/jvmStaticFieldReference.fir.txt

@@ -1,25 +1,25 @@
 FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
   FUN name:testFun visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
-      CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+      CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
         $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-        x: CONST String type=kotlin.String value="testFun"
+        p0: CONST String type=kotlin.String value="testFun"
   PROPERTY name:testProp visibility:public modality:FINAL [var]
     FUN name:<get-testProp> visibility:public modality:FINAL <> () returnType:kotlin.Any
       correspondingProperty: PROPERTY name:testProp visibility:public modality:FINAL [var]
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="testProp/get"
+          p0: CONST String type=kotlin.String value="testProp/get"
         RETURN type=kotlin.Nothing from='public final fun <get-testProp> (): kotlin.Any declared in <root>'
           CONST Int type=kotlin.Any value=42
     FUN name:<set-testProp> visibility:public modality:FINAL <> (value:kotlin.Any) returnType:kotlin.Unit
       correspondingProperty: PROPERTY name:testProp visibility:public modality:FINAL [var]
       VALUE_PARAMETER name:value index:0 type:kotlin.Any
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="testProp/set"
+          p0: CONST String type=kotlin.String value="testProp/set"
   CLASS CLASS name:TestClass modality:FINAL visibility:public superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.TestClass
     CONSTRUCTOR visibility:public <> () returnType:<root>.TestClass [primary]
@@ -33,9 +33,9 @@ FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
             BRANCH
               if: CONST Boolean type=kotlin.Boolean value=true
               then: BLOCK type=kotlin.Int origin=null
-                CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+                CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
                   $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-                  x: CONST String type=kotlin.String value="TestClass/test"
+                  p0: CONST String type=kotlin.String value="TestClass/test"
                 CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> ($this:<root>.TestClass) returnType:kotlin.Int
         correspondingProperty: PROPERTY name:test visibility:public modality:FINAL [val]
@@ -46,9 +46,9 @@ FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
               receiver: GET_VAR '<this>: <root>.TestClass declared in <root>.TestClass.<get-test>' type=<root>.TestClass origin=null
     ANONYMOUS_INITIALIZER isStatic=false
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="TestClass/init"
+          p0: CONST String type=kotlin.String value="TestClass/init"
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override]
       overridden:
         public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any

compiler/testData/ir/irText/expressions/jvmStaticFieldReference.txt

@@ -1,25 +1,25 @@
 FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
   FUN name:testFun visibility:public modality:FINAL <> () returnType:kotlin.Unit
     BLOCK_BODY
-      CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+      CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
         $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-        x: CONST String type=kotlin.String value="testFun"
+        p0: CONST String type=kotlin.String value="testFun"
   PROPERTY name:testProp visibility:public modality:FINAL [var]
     FUN name:<get-testProp> visibility:public modality:FINAL <> () returnType:kotlin.Any
       correspondingProperty: PROPERTY name:testProp visibility:public modality:FINAL [var]
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="testProp/get"
+          p0: CONST String type=kotlin.String value="testProp/get"
         RETURN type=kotlin.Nothing from='public final fun <get-testProp> (): kotlin.Any declared in <root>'
           CONST Int type=kotlin.Int value=42
     FUN name:<set-testProp> visibility:public modality:FINAL <> (value:kotlin.Any) returnType:kotlin.Unit
       correspondingProperty: PROPERTY name:testProp visibility:public modality:FINAL [var]
       VALUE_PARAMETER name:value index:0 type:kotlin.Any
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="testProp/set"
+          p0: CONST String type=kotlin.String value="testProp/set"
   CLASS CLASS name:TestClass modality:FINAL visibility:public superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.TestClass
     CONSTRUCTOR visibility:public <> () returnType:<root>.TestClass [primary]
@@ -33,9 +33,9 @@ FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
             BRANCH
               if: CONST Boolean type=kotlin.Boolean value=true
               then: BLOCK type=kotlin.Int origin=null
-                CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+                CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
                   $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-                  x: CONST String type=kotlin.String value="TestClass/test"
+                  p0: CONST String type=kotlin.String value="TestClass/test"
                 CONST Int type=kotlin.Int value=42
       FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> ($this:<root>.TestClass) returnType:kotlin.Int
         correspondingProperty: PROPERTY name:test visibility:public modality:FINAL [val]
@@ -46,9 +46,9 @@ FILE fqName:<root> fileName:/jvmStaticFieldReference.kt
               receiver: GET_VAR '<this>: <root>.TestClass declared in <root>.TestClass.<get-test>' type=<root>.TestClass origin=null
     ANONYMOUS_INITIALIZER isStatic=false
       BLOCK_BODY
-        CALL 'public open fun println (x: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
+        CALL 'public open fun println (p0: kotlin.String?): kotlin.Unit declared in java.io.PrintStream' type=kotlin.Unit origin=null
           $this: GET_FIELD 'FIELD IR_EXTERNAL_JAVA_DECLARATION_STUB name:out type:java.io.PrintStream? visibility:public [final,static]' type=java.io.PrintStream? origin=GET_PROPERTY
-          x: CONST String type=kotlin.String value="TestClass/init"
+          p0: CONST String type=kotlin.String value="TestClass/init"
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override]
       overridden:
         public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any