[clang] Revert "[CLANG-CL] ignores wpadded" (PR #134239)

[Alex Bradbury via cfe-commits]

asb wrote:

Pre-commit tests show this reverts cleanly. I'll commit directly in line with our patch reversion policy https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy

https://github.com/llvm/llvm-project/pull/134239