[Bug] Heads up notifications show the contains of a previous notification when grouped

[jkasten2]

Description:
Heads up notifications show the contains of a previous notification when notifications are grouped.

Context:
Notifications are grouped if you set a "Group Key" on OneSignal, or automatically by the OneSignal SDK when the 4th one is shown, without clearing the previous ones.

Environment
Issue reproduced on a Samsung S21 with Android 12 on the OneSignal-Android-SDK 4.7.2 SDK.

Steps to Reproduce Issue:

1. Change the app notification settings for the app to "Show as pop-up" or highest priority.

   • Or create a notification channel on the OneSignal dashboard with "Importance" set to "URGENT" and make sure use it on the next steps

2. Send a notification with a "Group Key" set, to any value

3. Observer the Heads up notification on the device is correct.

   • 

4. Send another notification (with different title and body, but same "Group Key"

5. Observer the heads up is WRONG, it shows the contents for the last notification

   • 

6. Also observer that if you open the notification shade they are actually correct though.

   •