refactor(frontend): frontend-embed/src/to-be-sharedを共通化 (#14536)

* refactor(frontend): shouldCollapsedを共通化

* refactor(frontend): config.js, worker-multi-dispatch.js, intl-const.jsを共通化

* fix(frontend-shared): fix type error

* refactor(frontend): is-link.jsと、同一の振る舞いをする記述を共通化

* fix

* fix lint

* lint fixes

packages/frontend/src/ui/classic.sidebar.vue

@@ -51,7 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { defineAsyncComponent, computed, watch, ref, shallowRef } from 'vue';
 import { openInstanceMenu } from './_common_/common.js';
-// import { host } from '@/config.js';
+// import { host } from '@@/js/config.js';
 import * as os from '@/os.js';
 import { navbarItemDef } from '@/navbar.js';
 import { openAccountMenu as openAccountMenu_, $i } from '@/account.js';