enhance(frontend): ウィジェットの設定項目の多言語対応 (#17032)

* enhance(frontend): ウィジェットの設定項目の多言語対応

* Update Changelog

* refactor: move options locale key to root for optimizing artifacts for locale inlining

* fix

* fix

* ✌️

---------

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

packages/frontend/src/widgets/WidgetNotifications.vue

@@ -31,10 +31,12 @@ const name = 'notifications';
 const widgetPropsDef = {
 	showHeader: {
 		type: 'boolean',
+		label: i18n.ts._widgetOptions.showHeader,
 		default: true,
 	},
 	height: {
 		type: 'number',
+		label: i18n.ts.height,
 		default: 300,
 	},
 	excludeTypes: {