Feat: 未読通知数を表示できるように (#11982)

* 未読通知数を表示できるように

* Update Changelog

* オプトインにする

* Fix lint

* (add) テスト通知のプッシュ通知を追加

* add test

* フロントエンドの表示上限を99に変更

* Make it default on

* 共通スタイルをくくりだす

* Update Changelog

* tweak

* Update UserEntityService.ts

* rename

* Update navbar-for-mobile.vue

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

packages/frontend/src/components/MkNotifications.vue

@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { onUnmounted, onMounted, computed, shallowRef } from 'vue';
+import { onUnmounted, onDeactivated, onMounted, computed, shallowRef } from 'vue';
 import MkPagination, { Paging } from '@/components/MkPagination.vue';
 import XNotification from '@/components/MkNotification.vue';
 import MkDateSeparatedList from '@/components/MkDateSeparatedList.vue';
@@ -68,6 +68,10 @@ onMounted(() => {
 onUnmounted(() => {
 	if (connection) connection.dispose();
 });
+
+onDeactivated(() => {
+	if (connection) connection.dispose();
+});
 </script>
 
 <style lang="scss" module>