KT-8542 Override dialog: only one class from hierarchy is shown

#KT-8542 Fixed

idea/testData/codeInsight/overrideImplement/ambiguousSuper.kt.after

@@ -0,0 +1,29 @@
+interface I {
+    open fun foo(){}
+}
+
+open class A {
+    open fun foo(){}
+}
+
+class C : A(), I {
+    override fun equals(other: Any?): Boolean {
+        <selection><caret>return super<A>.equals(other)</selection>
+    }
+
+    override fun foo() {
+        super<A>.foo()
+    }
+
+    override fun foo() {
+        super<I>.foo()
+    }
+
+    override fun hashCode(): Int {
+        return super<A>.hashCode()
+    }
+
+    override fun toString(): String {
+        return super<A>.toString()
+    }
+}