Upgrade from OSS to Pro and adding non-priveleged user causes HBBR service to not start due to HBBS & HBBR still running on previous account

Bug Description

When first installing OSS I wasn't prompted with the "this can run as a non priveleged user".
When upgrading to pro by running the script provided, the HBBR service didnt start.
When first installing OS version I ran it as admin1.
I ran the upgrade script as root due to an error with using "sudo bash" as admin1.
I used svc_user1 as the non-priveleged user.

After trying to uninstall, reinstall and so on I found out that a HBBR service still ran on the active ports 21115:21119 - i killed the HBBR process and it started instantly.

How to Reproduce

1. Install OS version as admin1
2. Upgrade from OS as root
3. Try starting HBBR service

Expected Behavior

systemctl status rustdesk-hbbr.service

This will exit with error code.

Operating system(s) on local side and remote side

Ubuntu 24.04.1 LTS (non-docker)

RustDesk Version(s) on local side and remote side

1.4.5 - only serverside

Screenshots

Additional Context

A restart of the server could've possibly solved it, however I didnt try it as a regular update should run without restarts.

Start with convertfromos.sh and inspect how the upgrade handles the existing HBBS and HBBR services and the selected non-privileged user. Reproduce the Ubuntu 24.04.1 LTS upgrade, check systemctl status rustdesk-hbbr.service, and inspect ports 21115:21119. Done means the upgraded HBBR service starts without an older HBBR process still running on those ports.