I was asked in different topic to share some steps which might help someone.
I am using i5-12400T and I managed to run Plex HW without any issues on 6.10.0-rc3, rc4, rc5.
What I did:
Created /boot/config/modprobe.d/i915.conf and added blacklist i915
Rebooted
chmod -R 777 /dev/dri
Installed Intel GPU TOP plugin
Passed /dev/dri into Plex docker container
Done
I did update to rc8 today and it stopped working so I restored rc5 and everything is working as expected.