FIR IDE: Enable ChangeVariableMutabilityFix for MUST_BE_INITIALIZED.

idea/testData/quickfix/variables/changeMutability/canBeVal/delegatedProperty2.kt

@@ -12,4 +12,5 @@ fun test() {
 class Delegate {
     operator fun setValue(thisRef: Any?, property: KProperty<*>, value: String) {
     }
-}
+}
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/delegatedProperty3.kt

@@ -10,4 +10,5 @@ fun test() {
     var foo: String by <caret>Delegate()
 }
 
-class Delegate
+class Delegate
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/uninitializedWithGetter.kt

@@ -2,4 +2,5 @@
 class Test {
     var foo<caret>
         get() = 1
-}
+}
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/uninitializedWithGetter.kt.after

@@ -2,4 +2,5 @@
 class Test {
     val foo
         get() = 1
-}
+}
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/uninitializedWithGetter2.kt

@@ -4,4 +4,5 @@ class Test {
         get() {
             return 1
         }
-}
+}
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/uninitializedWithGetter2.kt.after

@@ -4,4 +4,5 @@ class Test {
         get() {
             return 1
         }
-}
+}
+/* FIR_COMPARISON */

idea/testData/quickfix/variables/changeMutability/canBeVal/uninitializedWithGetter3.kt

@@ -11,4 +11,5 @@ class Test {
         get() {
             return 1
         }
-}
+}
+/* FIR_COMPARISON */