[@nativescript/local-notifications] Schedule not work on iOS with Buddhist calendar

[lsomchai]

Dear sir, I had upgraded my app to NativeScript 7 and the notification (@nativescript/local-notifications, version 5.1.0) does not work on iOS (14.4). After debugging all day, I found that LocalNotifications.schedule() not work because my iPhone is set the calendar to Buddhist.

The bug is in the index.ios.js file, in the method schedulePendingNotificationsNew() of class LocalNotificationsImpl as part of code below:

 // Notification trigger and repeat
 let trigger;
 if (options.at) {
   const cal = NSCalendar.currentCalendar;  //LocalNotificationsImpl.calendarWithMondayAsFirstDay();
   const date = cal.componentsFromDate(LocalNotificationsImpl.getInterval(options.interval), options.at);
   date.timeZone = NSTimeZone.defaultTimeZone;
   trigger = UNCalendarNotificationTrigger.triggerWithDateMatchingComponentsRepeats(date, options.interval !== undefined);
 }
 else {
   trigger = UNTimeIntervalNotificationTrigger.triggerWithTimeIntervalRepeats(2, false);
 }

At the line 137, the LocalNotificationsImpl.calendarWithMondayAsFirstDay() which return ISO8601 (Gregorian) calendar make a wrong matching trigger. So, I change the code to use the NSCalendar.currentCalendar and It work well.