Inspections: Forbid equals/hashCode inspection on object with explicit supertypes

#KT-9778 Fixed

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

@@ -34,6 +34,7 @@ import org.jetbrains.kotlin.psi.KtObjectDeclaration
 import org.jetbrains.kotlin.psi.KtVisitorVoid
 import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
 import org.jetbrains.kotlin.resolve.source.getPsi
+import org.jetbrains.kotlin.types.typeUtil.supertypes
 
 object DeleteEqualsAndHashCodeFix : LocalQuickFix {
     override fun getName() = "Delete equals()/hashCode()"
@@ -76,6 +77,7 @@ class EqualsOrHashCodeInspection : AbstractKotlinInspection() {
 
                 when (classDescriptor.kind) {
                     ClassKind.OBJECT -> {
+                        if (classOrObject.getDelegationSpecifiers().isNotEmpty()) return
                         holder.registerProblem(nameIdentifier, "equals()/hashCode() in object declaration", DeleteEqualsAndHashCodeFix)
                     }
                     ClassKind.CLASS -> {

idea/testData/inspections/equalsAndHashCode/test.kt

@@ -36,4 +36,14 @@ interface I {
 enum E {
     override fun equals(other: Any?) = true
     override fun hashCode() = 0
+}
+
+abstract class T
+
+object O4 : A() {
+    override fun equals(other: Any?) = true
+}
+
+object O5 : A() {
+    override fun hashCode() = 0
 }