Converts lingering panic alert calls over to the fmt-capable ones.
Fixes https://bugs.dolphin-emu.org/issues/12245. I considered making a change to DolphinQt instead of the core, but then additional effort would've been required to add the same fix to the Android GUI once we start using the new config system there.
glReadPixels() with depth formats is not supported. Should fix broken EFB access on GLES.
"Cache data" can be used to assist a driver with creating pipelines by using previously-compiled shader ISA.