Whether to use 24-hour format when formatting time.
The behavior of this flag is different across platforms:
- On Android this flag is reported directly from the user settings called "Use 24-hour format". It applies to any locale used by the application, whether it is the system-wide locale, or the custom locale set by the application.
- On iOS this flag is set to true when the user setting called "24-Hour Time" is set or the system-wide locale's default uses 24-hour formatting.
final bool alwaysUse24HourFormat;