[FE] Always report UNINITIALIZED_ENUM_COMPANION_WARNING

^KT-54055

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/EnumCompanionInEnumConstructorCallChecker.kt

@@ -67,22 +67,6 @@ object EnumCompanionInEnumConstructorCallChecker : DeclarationChecker {
             val dispatchIsCompanion = dispatchDescriptor == companionDescriptor
             val extensionIsCompanion = extensionDescriptor == companionDescriptor
 
-            val dispatchIsImplicit = resolvedCall.dispatchReceiver is ImplicitClassReceiver
-            val extensionIsImplicit = resolvedCall.extensionReceiver is ImplicitClassReceiver
-
-            /*
-             * ControlFlowInformationProviderImpl already reports UNINITIALIZED_ENUM_COMPANION for extension function calls
-             *   with implicit companion receiver, so we should skip reporting a warning
-             *
-             * If feature is enabled then ControlFlowInformationProviderImpl won't report an error, to keep all checks
-             *   in one place (in this checker)
-             */
-            if (
-                !reportError &&
-                expression is KtCallExpression &&
-                (dispatchIsCompanion && dispatchIsImplicit || extensionIsCompanion && extensionIsImplicit)
-            ) return false
-
             if (dispatchIsCompanion || extensionIsCompanion) {
                 val reportOn = when (val receiverExpression = (expression as? KtQualifiedExpression)?.receiverExpression) {
                     is KtSimpleNameExpression -> receiverExpression

compiler/testData/diagnostics/tests/controlFlowAnalysis/uninitializedCompanionOfEnum_before.kt

@@ -2,7 +2,7 @@
 // ISSUE: KT-49110, KT-54055
 
 enum class SomeEnum(val x: Int) {
-    A(<!UNINITIALIZED_ENUM_COMPANION!>companionFun<!>().length),// UNINITIALIZED_ENUM_COMPANION
+    A(<!UNINITIALIZED_ENUM_COMPANION_WARNING!><!UNINITIALIZED_ENUM_COMPANION!>companionFun<!>()<!>.length),// UNINITIALIZED_ENUM_COMPANION
     B(<!UNINITIALIZED_ENUM_COMPANION_WARNING, UNINITIALIZED_VARIABLE!>companionProp<!>.length), // UNINITIALIZED_VARIABLE
 
     C(<!UNINITIALIZED_ENUM_COMPANION_WARNING!>SomeEnum<!>.companionFun().length),
@@ -18,7 +18,7 @@ enum class SomeEnum(val x: Int) {
 }
 
 enum class OtherEnum(val x: Int) {
-    G(<!UNINITIALIZED_ENUM_COMPANION!>extensionFun<!>().length), // UNINITIALIZED_ENUM_COMPANION
+    G(<!UNINITIALIZED_ENUM_COMPANION_WARNING!><!UNINITIALIZED_ENUM_COMPANION!>extensionFun<!>()<!>.length), // UNINITIALIZED_ENUM_COMPANION
     H(<!UNINITIALIZED_ENUM_COMPANION_WARNING!>extensionProp<!>.length),
 
     I(<!UNINITIALIZED_ENUM_COMPANION_WARNING!>OtherEnum<!>.extensionFun().length),
@@ -39,13 +39,13 @@ val OtherEnum.Companion.extensionProp: String
 
 enum class EnumWithLambda(val lambda: () -> Unit) {
     M({
-      companionFun().length
+      <!UNINITIALIZED_ENUM_COMPANION_WARNING!>companionFun()<!>.length
       <!UNINITIALIZED_ENUM_COMPANION_WARNING!>companionProp<!>.length
 
       <!UNINITIALIZED_ENUM_COMPANION_WARNING!>EnumWithLambda<!>.companionFun().length
       <!UNINITIALIZED_ENUM_COMPANION_WARNING!>EnumWithLambda<!>.companionProp.length
 
-      extensionFun().length
+      <!UNINITIALIZED_ENUM_COMPANION_WARNING!>extensionFun()<!>.length
       <!UNINITIALIZED_ENUM_COMPANION_WARNING!>extensionProp<!>.length
 
       <!UNINITIALIZED_ENUM_COMPANION_WARNING!>EnumWithLambda<!>.extensionFun().length