[libcxx-commits] [libcxx] [libc++][test] Use `LIBCPP_STATIC_ASSERT` to deal with `noexcept` strengthening (PR #74254)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 requested changes to this pull request.

I'd like to have an answer first, since I feel like I'm missing something here that explains the `noexcept` missing from the standard. If that is the case, we may have to fix the test differently, and the MSVC STL would probably also be wrong in making things `noexcept` unconditionally.

https://github.com/llvm/llvm-project/pull/74254