"Redundant qualifier name": fix false positive with enum constant initialized with companion object field

#KT-33526 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/RemoveRedundantQualifierNameInspection.kt

@@ -20,10 +20,7 @@ import org.jetbrains.kotlin.idea.util.getResolutionScope
 import org.jetbrains.kotlin.idea.util.hasNotReceiver
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.psiUtil.endOffset
-import org.jetbrains.kotlin.psi.psiUtil.getLastParentOfTypeInRowWithSelf
-import org.jetbrains.kotlin.psi.psiUtil.getQualifiedElementSelector
-import org.jetbrains.kotlin.psi.psiUtil.startOffset
+import org.jetbrains.kotlin.psi.psiUtil.*
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.ImportedFromObjectCallableDescriptor
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
@@ -44,6 +41,13 @@ class RemoveRedundantQualifierNameInspection : AbstractKotlinInspection(), Clean
                 else
                     expressionForAnalyze
 
+                val parentEnumEntry = expressionForAnalyze.getStrictParentOfType<KtEnumEntry>()
+                if (parentEnumEntry != null) {
+                    val companionObject = (expressionForAnalyze.receiverExpression.mainReference?.resolve() as? KtObjectDeclaration)
+                        ?.takeIf { it.isCompanion() }
+                    if (companionObject?.containingClass() == parentEnumEntry.getStrictParentOfType<KtClass>()) return
+                }
+
                 val context = originalExpression.analyze()
 
                 val originalDescriptor = expressionForAnalyze.getQualifiedElementSelector()

idea/testData/inspectionsLocal/removeRedundantQualifierName/notApplicableCompanionInEnumEntry.kt

@@ -0,0 +1,9 @@
+// PROBLEM: none
+enum class C(val i: Int) {
+    ONE(<caret>C.K)
+    ;
+
+    companion object {
+        const val K = 1
+    }
+}

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -8369,6 +8369,11 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
             runTest("idea/testData/inspectionsLocal/removeRedundantQualifierName/notApplicableCompanion.kt");
         }
 
+        @TestMetadata("notApplicableCompanionInEnumEntry.kt")
+        public void testNotApplicableCompanionInEnumEntry() throws Exception {
+            runTest("idea/testData/inspectionsLocal/removeRedundantQualifierName/notApplicableCompanionInEnumEntry.kt");
+        }
+
         @TestMetadata("notApplicableCompanionOtherName.kt")
         public void testNotApplicableCompanionOtherName() throws Exception {
             runTest("idea/testData/inspectionsLocal/removeRedundantQualifierName/notApplicableCompanionOtherName.kt");