[llvm] [libcxx] [ci] Make the CI find the right version of Clang-cl (PR #161736)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> I mean with [fe42d34](https://github.com/llvm/llvm-project/commit/fe42d34274cac79794637bf2f69f85537dde8b74), these intrinsics should be tested on Windows environment since they are included through `intrin.h`.

That commit does not make any difference - it is unrelated. It removed ifdefs like `#if !defined(__SCE__) || __has_feature(modules) || defined(__BMI__)`. If `!defined(__SCE__)` (on non-playstation targets), this was an `#if 1`, so the ifdef had no effect before. So the commit, removing the ifdefs doesn't change anything.


https://github.com/llvm/llvm-project/pull/161736