Ease field initialization check

Since there is already VAL_REASSIGNMENT diagnostics, we can safely only
for direct assignments.
 #KT-40893 Fixed

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -5191,6 +5191,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/contracts/lambdaParameter.kt");
         }
 
+        @TestMetadata("listAppend.kt")
+        public void testListAppend() throws Exception {
+            runTest("compiler/testData/codegen/box/contracts/listAppend.kt");
+        }
+
         @TestMetadata("valInWhen.kt")
         public void testValInWhen() throws Exception {
             runTest("compiler/testData/codegen/box/contracts/valInWhen.kt");