JS: generate temporary names for function parameters. Remove tests for js() function that references parameters. Remove such usages of js() function from stdlib

js/js.translator/testData/box/native/jsTypeOf.kt

@@ -0,0 +1,18 @@
+fun box(): String {
+    var result = jsTypeOf(23)
+    if (result != "number") return "fail1: $result"
+
+    result = jsTypeOf("23")
+    if (result != "string") return "fail2: $result"
+
+    result = jsTypeOf({ x: Int -> x })
+    if (result != "function") return "fail3: $result"
+
+    result = jsTypeOf(object {})
+    if (result != "object") return "fail4: $result"
+
+    result = jsTypeOf(true)
+    if (result != "boolean") return "fail5: $result"
+
+    return "OK"
+}