Revert "[CLANG-CL] ignores wpadded" (#134239)
Reverts llvm/llvm-project#130182
This is causing failures on RISC-V and ppc builders as mentioned on
https://github.com/llvm/llvm-project/pull/130182#issuecomment-2775516899
Reverting so the issue can be fixed by the path author without time pressure (as noted in that PR, it seems a value is uninitialised).