refactor(frontend): 非推奨となったReactivity Transformを使わないように (#12539)

* refactor(frontend): 非推奨となったReactivity Transformを使わないように

* refactor: 不要な括弧を除去

* fix: 不要なアノテーションを除去

* fix: Refの配列をrefしている部分の対応

* refactor: 不要な括弧を除去

* fix: lint

* refactor: Ref、ShallowRef、ComputedRefの変数の宣言をletからconstに置換

* fix: type error

* chore: drop reactivity transform from eslint configuration

* refactor: remove unnecessary import

* fix: 対応漏れ

packages/frontend/src/pages/admin/server-rules.vue

@@ -41,7 +41,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { defineAsyncComponent } from 'vue';
+import { defineAsyncComponent, ref, computed } from 'vue';
 import XHeader from './_header_.vue';
 import * as os from '@/os.js';
 import { fetchInstance, instance } from '@/instance.js';
@@ -52,20 +52,20 @@ import MkInput from '@/components/MkInput.vue';
 
 const Sortable = defineAsyncComponent(() => import('vuedraggable').then(x => x.default));
 
-let serverRules: string[] = $ref(instance.serverRules);
+const serverRules = ref<string[]>(instance.serverRules);
 
 const save = async () => {
 	await os.apiWithDialog('admin/update-meta', {
-		serverRules,
+		serverRules: serverRules.value,
 	});
 	fetchInstance();
 };
 
 const remove = (index: number): void => {
-	serverRules.splice(index, 1);
+	serverRules.value.splice(index, 1);
 };
 
-const headerTabs = $computed(() => []);
+const headerTabs = computed(() => []);
 
 definePageMetadata({
 	title: i18n.ts.serverRules,