shader_recompiler: Ignore exec mask for scalar instructions.

[squidbus]

Looking at Mesa and other AMD ISA specs, it seems that the EXEC mask does not affect scalar or control flow instructions. This PR adds those to the EXEC ignore checks, as well as the rest of the vector read/write lane instructions since those are also documented to ignore it.

Fixes device loss entering first level in CUSA28193, improves graphics in CUSA05637, probably helps others as well.

[kvicken]

Resident Evil 2 still crashes with this error: [Debug] <Critical> scalar_memory.cpp:operator():49: Unreachable code!

Log:
shad_log.txt

[polybiusproxy]

The unreachable you're reporting has nothing to do with what this PR aims to solve. It'll be quite hard to solve that unfortunately.

[StevenMiller123]

Fixes device lost crashes in Persona 3 Reload.

[jimbigjim1]

The unreachable you're reporting has nothing to do with what this PR aims to solve. It'll be quite hard to solve that unfortunately.

You still have to do it eventually. Before you say, I would love to learn how to do it myself but I dont know how to code or where to even start... And Im seeing how even people who know C++ dont understand how the emulator works... It would take years to learn how to fix 1 issue