FIR checker: report val reassignment

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/CanBeValChecker.fir.txt

@@ -135,7 +135,7 @@ FILE: CanBeValChecker.kt
         }
 
         lval b: R|kotlin/String|
-        R|<local>/bool| = Boolean(false)
+        R|<local>/b| = Boolean(false)
     }
     public final fun cycles(): R|kotlin/Unit| {
         lvar a: R|kotlin/Int| = Int(10)

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/CanBeValChecker.kt

@@ -105,9 +105,9 @@ fun foo() {
     <!VARIABLE_NEVER_READ{LT}!><!CAN_BE_VAL!>var<!> <!VARIABLE_NEVER_READ{PSI}!>a<!>: Int<!>
     val bool = true
     if (bool) <!ASSIGNED_VALUE_IS_NEVER_READ!>a<!> = 4 else <!ASSIGNED_VALUE_IS_NEVER_READ!>a<!> = 42
-    <!UNUSED_VARIABLE{LT}!>val <!UNUSED_VARIABLE{PSI}!>b<!>: String<!>
+    <!VARIABLE_NEVER_READ{LT}!>val <!VARIABLE_NEVER_READ{PSI}!>b<!>: String<!>
 
-    <!ASSIGNED_VALUE_IS_NEVER_READ!>bool<!> = false
+    <!ASSIGNED_VALUE_IS_NEVER_READ!>b<!> = false
 }
 
 fun cycles() {

compiler/fir/analysis-tests/testData/resolveWithStdlib/contracts/fromSource/good/callsInPlace/atLeastOnce.kt

@@ -19,7 +19,7 @@ fun myRun(block: () -> Unit) {
 fun test_1() {
     val x: Int
     inlineRun {
-        x = 1
+        <!VAL_REASSIGNMENT!>x<!> = 1
     }
     x.inc()
 }
@@ -27,7 +27,7 @@ fun test_1() {
 fun test_2() {
     val x: Int
     myRun {
-        x = 1
+        <!VAL_REASSIGNMENT!>x<!> = 1
     }
     x.inc()
 }

compiler/fir/analysis-tests/testData/resolveWithStdlib/contracts/fromSource/good/callsInPlace/unknown.kt

@@ -19,7 +19,7 @@ fun myRun(block: () -> Unit) {
 fun test_1() {
     val x: Int
     inlineRun {
-        x = 1
+        <!VAL_REASSIGNMENT!>x<!> = 1
     }
     <!UNINITIALIZED_VARIABLE!>x<!>.inc()
 }
@@ -27,7 +27,7 @@ fun test_1() {
 fun test_2() {
     val x: Int
     myRun {
-        x = 1
+        <!VAL_REASSIGNMENT!>x<!> = 1
     }
     <!UNINITIALIZED_VARIABLE!>x<!>.inc()
 }