refactor: 💡 remove route-action usage for auth-methods (#2178)

* refactor: 💡 remove route-action usage for auth-methods

✅ Closes: https://hashicorp.atlassian.net/browse/ICU-12603

ui/admin/tests/unit/controllers/scopes/scope/auth-methods/new-test.js

@@ -4,7 +4,7 @@
  */
 
 import { module, test } from 'qunit';
-import { setupTest } from 'admin/tests/helpers';
+import { setupTest } from 'ember-qunit';
 
 module('Unit | Controller | scopes/scope/auth-methods/new', function (hooks) {
   setupTest(hooks);