Fix broken in-app notification on native

Summary: This differential fixes broken thiock thread in-app notifications on Android and iOS. They were broken since our code considered them to be old schema notifications and converted them by adding authoritativeKeyserverID prefix.

Test Plan:

1. Create thick thread using Kamil UI button.
2. Send notifications to iOS and Android devices. Ensure that in-app notifications are correctly handled: not displayed when thread is active and displayed in other cases

Reviewers: kamil, tomek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13237