Use browser language as dayjs locale

src/index.tsx

@@ -15,9 +15,14 @@ import '@/index.css';
 // roboto font
 import '@fontsource/roboto';
 import { defaultPromiseErrorHandler } from '@/util/defaultPromiseErrorHandler.ts';
+import { loadDayJsLocale } from '@/util/language.tsx';
 
 dayjs.extend(customParseFormat);
 
+loadDayJsLocale(navigator.language).then(() => {
+    dayjs.locale(navigator.language);
+});
+
 if ('serviceWorker' in navigator) {
     navigator.serviceWorker.ready.then((registration) => {
         registration.unregister().catch(defaultPromiseErrorHandler('unregister service workers'));