Make change signature fix non-applicable for constructors (EA-76554)

idea/src/org/jetbrains/kotlin/idea/quickfix/ChangeFunctionReturnTypeFix.java

@@ -102,7 +102,9 @@ public class ChangeFunctionReturnTypeFix extends KotlinQuickFixAction<KtFunction
 
     @Override
     public boolean isAvailable(@NotNull Project project, @Nullable Editor editor, @NotNull PsiFile file) {
-        return super.isAvailable(project, editor, file) && !ErrorUtils.containsErrorType(type);
+        return super.isAvailable(project, editor, file) &&
+               !ErrorUtils.containsErrorType(type) &&
+               !(getElement() instanceof KtConstructor);
     }
 
     @Override

idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/notApplicableToConstructor.kt

@@ -0,0 +1,9 @@
+// "Change 'A' function return type to 'B'" "false"
+// ACTION: Change 'b' type to 'A'
+// ACTION: Convert property initializer to getter
+// ERROR: Type mismatch: inferred type is A but B was expected
+
+class A constructor() {}
+interface B
+
+val b: B = <caret>A()

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java

@@ -7274,6 +7274,12 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("notApplicableToConstructor.kt")
+            public void testNotApplicableToConstructor() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/notApplicableToConstructor.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("propertyGetterInitializerTypeMismatch.kt")
             public void testPropertyGetterInitializerTypeMismatch() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/quickfix/typeMismatch/typeMismatchOnReturnedExpression/propertyGetterInitializerTypeMismatch.kt");