refactor(frontend): Reactivityで型を明示するように (#12791)

* refactor(frontend): Reactivityで型を明示するように

* fix: プロパティの参照が誤っているのを修正

* fix: 初期化の値を空配列に書き換えていた部分をnullに置き換え

packages/frontend/src/pages/my-clips/index.vue

@@ -27,6 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { watch, ref, shallowRef, computed } from 'vue';
+import * as Misskey from 'misskey-js';
 import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkClipPreview from '@/components/MkClipPreview.vue';
@@ -42,7 +43,7 @@ const pagination = {
 };
 
 const tab = ref('my');
-const favorites = ref();
+const favorites = ref<Misskey.entities.Clip[] | null>(null);
 
 const pagingComponent = shallowRef<InstanceType<typeof MkPagination>>();