[llvm] [AMDGPU] Add insert/extract test to test instruction V_CNDMASK_B32 (PR #79384)

[Jay Foad via llvm-commits]

https://github.com/jayfoad commented:

The test looks OK, but what is it testing, and what does it have to do with V_CNDMASK_B32?

https://github.com/llvm/llvm-project/pull/79384