[7.4.0] Fix ml path for Windows clang-cl cc toolchain

[iancha1992]

Assembly files are not valid inputs for clang-cl.exe; the MSVC ml64.exe must be used instead.

Fixes #23128.

Closes #23337.

PiperOrigin-RevId: 666406544
Change-Id: Ia7a5fc4702f08a5754145ca286c079d1a4f0e204

Commit e5a083d

[meteorcloudy]

@michaelsiegrist Should we revert this change given more users are broken by this?

[michaelsiegrist]

Not yet; I think this fixes an actual bug. I can locally verify that clang-cl does not properly handle the dec.S file from the unit test, so backing this out would cause a different regression. IMO the right thing to do is figure out the right way to not pass C/C++ compilation options to ml64 since it can't handle those and, I believe, those kinds of options wouldn't have an impact on .S compilation anyway.

That said, if this is causing more problems than it solves and the argument-passing stuff can't be resolved, I can look at backing this out and solving the problem we're experiencing on my end.