Migrate ee/filtered_search to Jest

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/194285

ee/spec/javascripts/filtered_search/issues_filtered_search_token_keys_spec.js → ee/spec/frontend/filtered_search/issues_filtered_search_token_keys_spec.js

@@ -28,7 +28,7 @@ describe('Issues Filtered Search Token Keys (EE)', () => {
     it('should return assignee as an array', () => {
       const assignee = tokenKeys.find(tokenKey => tokenKey.key === 'assignee');
 
-      expect(assignee.type).toEqual('array');
+      expect(assignee.type).toBe('array');
     });
   });