[llvm] [AMDGPU] Add hazard tests for cvt scale of fp4. (PR #118813)

[Matt Arsenault via llvm-commits]

================
@@ -641,11 +857,65 @@ body:             |
 ...
 
 ---
-name:            test_cvt_scalef32_fp4_bf16_hazard
+name:            test_cvt_scalef32_fp4_f16_opsel0_neg_fp4_as_src_hazard
----------------
arsenm wrote:

Missed pk in the name

https://github.com/llvm/llvm-project/pull/118813