Automatically mute failed tests

compiler/testData/codegen/box/javaInterop/objectMethods/cloneableClassWithoutClone.kt

@@ -1,3 +1,6 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
 data class A(val s: String) : Cloneable {
     fun externalClone(): A = clone() as A
 }