title: willPresentNotification not work as expected
body: <p>Im work with push notification and did implement method:</p>
  
  <pre><code>-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler{
  
      NSLog(@"will-present");
  }
  </code></pre>
  
  <p>However, it's called only when notification will present during app active state, not background. Is there any way to proceed callback when notification is about to show and iPhone screen is locked?</p>