message: [IMPROVEMENT] Android push notification as a heads-up notification
diff: @@ -213,9 +213,11 @@ public class CustomPushNotification extends PushNotification {
  String CHANNEL_ID = "rocketchatrn_channel_01";
  String CHANNEL_NAME = "All";
  + // User-visible importance level: Urgent - Makes a sound and appears as a heads-up notification
  + // https://developer.android.com/training/notify-user/channels#importance
  NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
  CHANNEL_NAME,
  - NotificationManager.IMPORTANCE_DEFAULT);
  + NotificationManager.IMPORTANCE_HIGH);
  final NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
  notificationManager.createNotificationChannel(channel);
  