OS-level notifications for all local instances when upgrading a single instance to a new version

When upgrading a local instance to a new server version, I get one OS-level notification that a background item has been added for each instance running on my system. I would expect to get only one for the newly upgraded instance.

**Update:** I've just noticed that I also get these notifications after restarting my system. I do not get any notifications for other background services, but I get one per EdgeDB instance upon restart. Added this as an alternative reproduction.


- EdgeDB Version: 3.0-rc.1+23c3462
- EdgeDB CLI Version: EdgeDB CLI 3.1.0-dev.994+eb21ca5
- OS Version: macOS 13.3.1

Steps to Reproduce:

1. With other instances on the system, upgrade an existing instance to a new version
2. Observe notifications

or

1. With instances on the system, restart the computer
2. Observe notifications