[test] Don't run JS-specific irText tests against other backends

compiler/testData/ir/irText/js/dynamic/invokeOperator.kt

@@ -1,3 +1,5 @@
+// TARGET_BACKEND: JS_IR
+
 // FIR_IDENTICAL
 fun invoke() {}
 
@@ -7,4 +9,4 @@ fun test3(a: dynamic, b: dynamic) = a(b)
 fun test4(a: dynamic, b: dynamic) = a.invoke(b)
 fun test5(a: dynamic, b: dynamic) = a(b)(b)
 fun test6(a: dynamic, b: dynamic) = a(b).invoke(b)
-fun test7(a: dynamic) = invoke()
+fun test7(a: dynamic) = invoke()