add missing toast id: (#2245)

- follow up to #2236, add a toast for account settings localization
formatting

frontend/src/pages/account-settings.ts

@@ -603,6 +603,7 @@ export class AccountSettings extends BtrixElement {
       message: msg("Your formatting preference has been updated."),
       variant: "success",
       icon: "check2-circle",
+      id: "account-settings-formatting",
     });
   };
 }