fixup! Add TorStrings module for localization

Bug 42481: Modularize SecurityLevel.

toolkit/modules/TorStrings.sys.mjs

@@ -3,10 +3,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
-const { AppConstants } = ChromeUtils.import(
-  "resource://gre/modules/AppConstants.jsm"
-);
+import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
 
 function getLocale() {
   const locale = Services.locale.appLocaleAsBCP47;