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/widgets/WidgetPhotos.vue

@@ -23,6 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { onUnmounted, ref } from 'vue';
+import * as Misskey from 'misskey-js';
 import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import { GetFormResultType } from '@/scripts/form.js';
 import { useStream } from '@/stream.js';
@@ -57,7 +58,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 );
 
 const connection = useStream().useChannel('main');
-const images = ref([]);
+const images = ref<Misskey.entities.DriveFile[]>([]);
 const fetching = ref(true);
 
 const onDriveFileCreated = (file) => {