[clang] [llvm] [llvm] Support llvm::Any across shared libraries on windows (PR #108051)

[Yitzhak Mandelbaum via cfe-commits]

ymand wrote:

> idk if this was kinda the explanation you were after or not https://discourse.llvm.org/t/supporting-llvm-build-llvm-dylib-on-windows/58891

Indeed, thank you!

https://github.com/llvm/llvm-project/pull/108051