[test] Mute failing irText tests

compiler/testData/ir/irText/expressions/for.kt

@@ -1,4 +1,6 @@
 // WITH_STDLIB
+// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR_ES6
 
 fun testEmpty(ss: List<String>) {
     for (s in ss);
@@ -19,4 +21,4 @@ fun testDestructuring(pp: List<Pair<Int, String>>) {
 
 fun testRange() {
     for (i in 1..10);
-}
+}