Detecting notification fails

[bielu]

Describe the bug
i tried to follow https://docs.jumoo.co.uk/usync/uSync/extending/detecting, but both ways failed.

To Reproduce
Steps to reproduce the behavior:

1. Create usync pack of media (or export files)
2. attach notification to saving event
3. Import usync pack of media (or import through usync dashboard)

Expected behavior
Being able to detect if content comes from usync (it shouldn't matter if it is from media or content)

Screenshots
If applicable, add screenshots to help explain your problem.

About your Site (please complete the following information):

• Umbraco Version: 13.5.2
• uSync Version: 13.2.5
• Browser [e.g. chrome, safari]

Additional context
Add any other context about the problem here.

[bielu]

@KevinJump i have look into source code of both umbraco and usync, so the issue happens when you try to attach to cancellable notifications (Saving, Publishing), because your ScopedNotificationPublisher overriden only PublishScopedNotifications, where we would actually need to override PublishCancelableAsync and PublishCancelable to attach state to cancellable events, I can do pr to resolve it, but it I would need advise from you, as i can see in ScopedNotificationPublisher you done some background queining, do we want do it as well in other notifactions?