refactor(frontend): asとanyをすぐなおせる範囲で除去 (#14848)

* refactor(frontend): できるだけanyを除去

* refactor

* lint

* fix

* remove unused

* Update packages/frontend/src/components/MkReactionsViewer.details.vue

* Update packages/frontend/src/components/MkUsersTooltip.vue

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

packages/frontend/src/components/MkChannelPreview.vue

@@ -47,11 +47,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { computed, ref, watch } from 'vue';
+import * as Misskey from 'misskey-js';
 import { i18n } from '@/i18n.js';
 import { miLocalStorage } from '@/local-storage.js';
 
 const props = defineProps<{
-	channel: Record<string, any>;
+	channel: Misskey.entities.Channel;
 }>();
 
 const getLastReadedAt = (): number | null => {