Improve emoji-picker (#5515)

* Improve emoji-picker

* remove unimplanted translation

* カテゴリのサジェスト

* use unique

src/client/app/store.ts

@@ -79,6 +79,8 @@ const defaultDeviceSettings = {
 	enableMobileQuickNotificationView: false,
 	roomGraphicsQuality: 'medium',
 	roomUseOrthographicCamera: true,
+	activeEmojiCategoryName: undefined,
+	recentEmojis: [],
 };
 
 export default (os: MiOS) => new Vuex.Store({