Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When stacker to whom you are subscribed posts in a territory to which you’re subscribed, you receive a push notification for each, e.g.:

1. User posted foo
2. user posted foo in bar territory

These are deduped in the notifications page. They should also be deduped in push notifications.

Screenshots

I forgot to take one before clearing the notifications.

Steps To Reproduce

1. Enable push notifications
2. Subscribe to a user
3. subscribe to a territory
4. wait for the user to post in the territory
5. see 2 notifications

Expected behavior

Only 1 push notification should come through

Logs

No response

Device information

iOS PWA

Additional context

No response