[libcxx-commits] [libcxx] [libc++] Add MSVC's implementation of `exception_ptr` for Windows (PR #94977)

[Petr Hosek via libcxx-commits]

petrhosek wrote:

> @petrhosek Would you be able to pick this up? I can provide guidance if needed.

This should be ready for review. I used Gemini to automate the refactoring since the original patch was rather large. I made the changes in three stages and I deliberately kept them separate as three commits so they can be reviewed independently and you can more easily trace the changes.

https://github.com/llvm/llvm-project/pull/94977