Chroot into the system and downgrade mesa.
Further information sources:
https://discovery.endeavouros.com/system-rescue/arch-chroot/2022/12/
https://archlinux-downgrade.github.io/downgrade/downgrade.8#EXAMPLES
Be careful when asked if the package should be blacklisted for for future updates.
https://forum.endeavouros.com/t/mesa-caution-to-all-users/71674/47