Remove EE-specific changes from FilteredSearchBoards

(cherry picked from commit 250c9b9e)

app/assets/javascripts/boards/filtered_search_boards.js

+import IssuableFilteredSearchTokenKeys from 'ee_else_ce/filtered_search/issuable_filtered_search_token_keys';
 import FilteredSearchContainer from '../filtered_search/container';
 import FilteredSearchManager from '../filtered_search/filtered_search_manager';
 import boardsStore from './stores/boards_store';
+import { isEE } from '~/lib/utils/common_utils';
 
 export default class FilteredSearchBoards extends FilteredSearchManager {
   constructor(store, updateUrl = false, cantEdit = []) {
@@ -8,6 +10,8 @@ export default class FilteredSearchBoards extends FilteredSearchManager {
       page: 'boards',
       isGroupDecendent: true,
       stateFiltersSelector: '.issues-state-filters',
+      isGroup: isEE(),
+      filteredSearchTokenKeys: IssuableFilteredSearchTokenKeys,
     });
 
     this.store = store;