Minor, add bytecode text test on bridges for fake overrides

compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt

@@ -0,0 +1,20 @@
+trait A {
+    fun foo(): Object
+}
+
+open class B {
+    fun foo(): String = "hello"
+}
+
+open class C : B()
+
+class D : A, C() {
+    // There's a fake override for 'foo' in class D, and, since there are declarations with different signatures in the supertypes,
+    // a bridge is generated with the signature foo()Ljava/lang/Object; which invokes foo()Ljava/lang/String;
+    // This test checks that the generated bridge calls D.foo() instead of B.foo(). That way when an implementation of
+    // foo()Ljava/lang/String is added to C later, D won't need to be recompiled.
+    // Note that invokevirtual/invokespecial of C.foo() would also be fine (invokespecial is javac's behavior).
+}
+
+// 1 INVOKEVIRTUAL D.foo
+// 0 INVOKEVIRTUAL B.foo