FE: add test reproducing KT-53953

compiler/testData/diagnostics/tests/java8Overrides/abstractFakeOverrideSuperCallOneMoreLevel.fir.kt

@@ -0,0 +1,16 @@
+// !LANGUAGE: -ForbidSuperDelegationToAbstractFakeOverride
+interface Foo {
+    fun check(): String = "OK"
+}
+abstract class Base {
+    abstract fun check(): String
+}
+
+abstract class Derived : Base(), Foo
+abstract class Derived2 : Derived() // ONE MORE LEVEL
+
+class Problem : Derived2() {
+    override fun check(): String {
+        return super.<!ABSTRACT_SUPER_CALL_WARNING!>check<!>() // NO COMPILER ERROR, BUT FAILURE IN RUNTIME
+    }
+}

compiler/testData/diagnostics/tests/java8Overrides/abstractFakeOverrideSuperCallOneMoreLevel.kt

@@ -0,0 +1,16 @@
+// !LANGUAGE: -ForbidSuperDelegationToAbstractFakeOverride
+interface Foo {
+    fun check(): String = "OK"
+}
+abstract class Base {
+    abstract fun check(): String
+}
+
+abstract class Derived : Base(), Foo
+abstract class Derived2 : Derived() // ONE MORE LEVEL
+
+class Problem : Derived2() {
+    override fun check(): String {
+        return super.check() // NO COMPILER ERROR, BUT FAILURE IN RUNTIME
+    }
+}

compiler/testData/diagnostics/tests/java8Overrides/abstractFakeOverrideSuperCallOneMoreLevel.txt

@@ -0,0 +1,40 @@
+package
+
+public abstract class Base {
+    public constructor Base()
+    public abstract fun check(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public abstract class Derived : Base, Foo {
+    public constructor Derived()
+    public open override /*2*/ /*fake_override*/ fun check(): kotlin.String
+    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public abstract class Derived2 : Derived {
+    public constructor Derived2()
+    public open override /*1*/ /*fake_override*/ fun check(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface Foo {
+    public open fun check(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class Problem : Derived2 {
+    public constructor Problem()
+    public open override /*1*/ fun check(): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}