Mac reboot causes Apple ID and Phone Number notifications across all devices
I have a M1 Mac Mini running Monterey as a media server. Anytime something causes a reboot (system crash, power outage, etc.) I get notifications on all my devices that a new Mac is using my Apple ID and Phone Number in Messages. I am not logged into Messages on this Mac because it's just a media server, but I am logged into my iCloud account. I have no idea how to make these messages go away.
Mac mini 2018 or later