Conversation shortcut push not working

[posth2071]

I wanted the push to show up like the default messenger and other chat apps, so while working on it I looked for the keyword android conversation shortcut and tried to incorporate it.

In the native android code, when you open a notification via NotificationManager, in order to display it in the conversation style, it only needs to meet two conditions to be displayed correctly

1. set shortcutId
2. Set MessagingStyle

However, when displaying a push via FlutterLocalNotifications plugin, it is displayed in normal push style even if you apply two conditions

The top notification in the attached photo shows the notification displayed via android native

The bottom notificationd is a notification displayed via FlutterLocalNotification

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I'll attach my code

1. Android Native code

    val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
   
    val channelName = "Channel human readable title"
    val channelDescription = "Channel human readable description"
    val importance = NotificationManager.IMPORTANCE_DEFAULT
   
    val channel = NotificationChannel(channelId, channelName, importance).apply {
        description = channelDescription
    }
   
    notificationManager.createNotificationChannel(channel)
   
    val notification = Notification.Builder(context, channelId)
        .setStyle(
            Notification.MessagingStyle(person)
                .addMessage("message 1", System.currentTimeMillis(), person)
                .addMessage("message 2", System.currentTimeMillis(), person)
                .addMessage("message 3", System.currentTimeMillis(), person)
        )
        .setSmallIcon(R.mipmap.ic_launcher)
        .setContentTitle("ContentTitle")
        .setContentText("ContentText")
        .setAutoCancel(true)
        .setSmallIcon(R.mipmap.ic_launcher)
        .setShortcutId(shortcutId)
        .setContentIntent(
            PendingIntent.getActivity(
                context,
                0,
                Intent(context, MainActivity::class.java),
                PendingIntent.FLAG_IMMUTABLE
            )
        )
        .build()
   
    notificationManager.notify(1, notification)
   

`
3. Flutter LocalNotification code

const shortcutId = 'shortcutId';
const person = Person(
  name: 'Person Name',
  icon: FlutterBitmapAssetAndroidIcon(
      'assets/image/img_profile_placeholder.png'),
);

return _flutterLocalNotifications.show(
  0,
  title,
  body,
  NotificationDetails(
    android: AndroidNotificationDetails(
      _channel.id,
      _channel.name,
      channelDescription: _channel.description,
      importance: Importance.max,
      priority: Priority.high,
      icon: _androidIcon,
      enableLights: true,
      styleInformation: MessagingStyleInformation(
        person,
        conversationTitle: shortcutId,
        messages: [
          Message(
            'local Message Text',
            DateTime.now(),
            person,
          ),
        ],
      ),
      shortcutId: shortcutId,
    ),
    iOS: const DarwinNotificationDetails(
      presentAlert: true,
      presentSound: true,
      presentBadge: true,
    ),
  ),
  payload: payload != null ? jsonEncode(payload.toJson()) : null,
);

`