fix: チャット周りの修正 (#15741)

* fix(misskey-js): チャットのChannel型定義を追加

* fix(backend); canChatで塞いでいない書き込み系のAPIを塞ぐ

* fix(frontend): チャット周りのフロントエンド型修正

* lint fix

* fix broken lockfile

* fix

* refactor

* wip

* wip

* wip

* clean up

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/pages/chat/room.search.vue

@@ -33,14 +33,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { computed, onMounted, ref } from 'vue';
+import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XMessage from './XMessage.vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
 import { infoImageUrl } from '@/instance.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
-import * as os from '@/os.js';
 import MkInput from '@/components/MkInput.vue';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';