[test] Run irText tests against K1 frontend for JS

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

@@ -1,3 +1,6 @@
+// IGNORE_BACKEND_K1: JS_IR
+// IGNORE_BACKEND_K1: JS_IR_ES6
+
 fun test1() {
     throw Throwable()
 }
@@ -6,4 +9,4 @@ fun testImplicitCast(a: Any) {
     if (a is Throwable) {
         throw a
     }
-}
+}