fix(frontend): /iのレスポンスに含まれないプロパティが消えずに残り続ける問題を修正

packages/frontend/src/components/MkAnnouncementDialog.vue

@@ -29,7 +29,7 @@ import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkModal from '@/components/MkModal.vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
-import { $i, updateAccount } from '@/account.js';
+import { $i, updateAccountPartial } from '@/account.js';
 
 const props = withDefaults(defineProps<{
 	announcement: Misskey.entities.Announcement;
@@ -51,7 +51,7 @@ async function ok() {
 
 	modal.value?.close();
 	misskeyApi('i/read-announcement', { announcementId: props.announcement.id });
-	updateAccount({
+	updateAccountPartial({
 		unreadAnnouncements: $i!.unreadAnnouncements.filter(a => a.id !== props.announcement.id),
 	});
 }