IR: Test for toSkip(this) in T.resolveFakeOverride()

^KT-49371 Fixed

compiler/testData/codegen/box/fakeOverride/kt49371.kt

@@ -0,0 +1,23 @@
+interface Left
+interface Right
+class Bottom : Left, Right
+
+interface A<T> {
+    fun f(): T? {
+        return null
+    }
+}
+
+interface B<T : Left> : A<T> {}
+
+abstract class C<T> : A<T>
+
+abstract class D<T : Right> : C<T>()
+
+class Z : D<Bottom>(), B<Bottom>
+
+
+fun box(): String {
+    Z().f()
+    return "OK"
+}