getLocalTimezone function
Gets the local timezone identifier for web platforms.
Uses the browser's Intl.DateTimeFormat API to determine the local timezone.
This implementation is used when dart:html is available (web platforms).
Returns a Future<String> containing the timezone identifier (e.g., "America/New_York",
"Europe/London", "Asia/Tokyo"). If the timezone cannot be determined, returns 'UTC'.
Implementation
Future<String> getLocalTimezone() async {
return _getTimezoneViaIntl();
}