Replace 'class object' with 'default object' in renderers and test data

Includes changes to decompiled text
Old syntax is used in builtins and project code for now

compiler/testData/loadJava/compiledKotlin/class/ClassMemberConflict.kt

@@ -2,7 +2,7 @@
 package test
 
 class ConstructorTypeParamClassObjectTypeConflict<test> {
-    class object {
+    default object {
         trait test
     }
 
@@ -10,7 +10,7 @@ class ConstructorTypeParamClassObjectTypeConflict<test> {
 }
 
 class ConstructorTypeParamClassObjectConflict<test> {
-    class object {
+    default object {
         val test = 12
     }
 
@@ -18,7 +18,7 @@ class ConstructorTypeParamClassObjectConflict<test> {
 }
 
 class TestConstructorParamClassObjectConflict(test: String) {
-    class object {
+    default object {
         val test = 12
     }
 
@@ -27,7 +27,7 @@ class TestConstructorParamClassObjectConflict(test: String) {
 
 
 class TestConstructorValClassObjectConflict(val test: String) {
-    class object {
+    default object {
         val test = 12
     }
 
@@ -35,7 +35,7 @@ class TestConstructorValClassObjectConflict(val test: String) {
 }
 
 class TestClassObjectAndClassConflict {
-    class object {
+    default object {
         val bla = 12
     }
 

compiler/testData/loadJava/compiledKotlin/class/ClassMemberConflict.txt

@@ -5,7 +5,7 @@ internal final class ConstructorTypeParamClassObjectConflict</*0*/ test> {
     internal final val some: kotlin.Int = 12
         internal final fun <get-some>(): kotlin.Int
 
-    internal class object Default {
+    internal default object Default {
         /*primary*/ private constructor Default()
         internal final val test: kotlin.Int = 12
             internal final fun <get-test>(): kotlin.Int
@@ -17,7 +17,7 @@ internal final class ConstructorTypeParamClassObjectTypeConflict</*0*/ test> {
     internal final val some: test?
         internal final fun <get-some>(): test?
 
-    internal class object Default {
+    internal default object Default {
         /*primary*/ private constructor Default()
 
         internal trait test {
@@ -32,7 +32,7 @@ internal final class TestClassObjectAndClassConflict {
     internal final val some: kotlin.String = "More"
         internal final fun <get-some>(): kotlin.String
 
-    internal class object Default {
+    internal default object Default {
         /*primary*/ private constructor Default()
         internal final val bla: kotlin.Int = 12
             internal final fun <get-bla>(): kotlin.Int
@@ -44,7 +44,7 @@ internal final class TestConstructorParamClassObjectConflict {
     internal final val some: kotlin.String
         internal final fun <get-some>(): kotlin.String
 
-    internal class object Default {
+    internal default object Default {
         /*primary*/ private constructor Default()
         internal final val test: kotlin.Int = 12
             internal final fun <get-test>(): kotlin.Int
@@ -58,7 +58,7 @@ internal final class TestConstructorValClassObjectConflict {
     internal final val test: kotlin.String
         internal final fun <get-test>(): kotlin.String
 
-    internal class object Default {
+    internal default object Default {
         /*primary*/ private constructor Default()
         internal final val test: kotlin.Int = 12
             internal final fun <get-test>(): kotlin.Int

compiler/testData/loadJava/compiledKotlin/class/NamedObjectInClassObject.kt

@@ -2,7 +2,7 @@
 package test
 
 public class Outer {
-    public class object {
+    public default object {
         public object Obj {
             public val v: String = "val"
             public fun f(): String = "fun"

compiler/testData/loadJava/compiledKotlin/class/NamedObjectInClassObject.txt

@@ -3,7 +3,7 @@ package test
 public final class Outer {
     /*primary*/ public constructor Outer()
 
-    public class object Default {
+    public default object Default {
         /*primary*/ private constructor Default()
 
         public object Obj {