feat: Add date/time template options to template titles

app/utils/language.ts

@@ -1,4 +1,5 @@
 import { i18n } from "i18next";
+import { unicodeCLDRtoBCP47 } from "@shared/utils/date";
 import Desktop from "./Desktop";
 
 export function detectLanguage() {
@@ -14,7 +15,7 @@ export function changeLanguage(
   if (toLanguageString && i18n.language !== toLanguageString) {
     // Languages are stored in en_US format in the database, however the
     // frontend translation framework (i18next) expects en-US
-    const locale = toLanguageString.replace("_", "-");
+    const locale = unicodeCLDRtoBCP47(toLanguageString);
     i18n.changeLanguage(locale);
 
     Desktop.bridge?.setSpellCheckerLanguages(["en-US", locale]);