Add a test

compiler/testData/codegen/box/bridges/fakeOverrideFromInterfaceThroughIntermediateClass.kt

@@ -0,0 +1,21 @@
+// KT-4145
+
+interface A {
+    fun foo(): Any
+}
+
+interface B {
+    fun foo(): String = "A"
+}
+
+open class D: B
+
+open class C: D(), A
+
+fun box(): String {
+    val a: A = C()
+    if (a.foo() != "A") return "Fail 1"
+    if ((a as B).foo() != "A") return "Fail 2"
+    if ((a as C).foo() != "A") return "Fail 3"
+    return "OK"
+}