Damn im having this same issue. The only way i can get into the GUI is if i add nomodeset to the boot. I have a 7700x CPU and a 7900xt GPU. Anyway to revert the updates or is it just best to refresh from recovery?

7700x 7900xt on a gigabyte b650 aorus elite. 3 nvme triple Pop os/Fedora/win 11 triple boot. Runs like a champ. I spend most time on Fedora.

In /usr/share/application I think

Change line 38 from PrefersNonDefaultGPU=true to PrefersNonDefaultGPU=false

Yeah I had the same. The new stream update did it. There is a fix… There is a value that needs to be changed in the steam.desktop file to fix it. I have to find it.