[clang] [clang-tools-extra] [llvm] `cp -r` replaces symlinks, update to `cp -R` (PR #201463)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 commented:

I think this makes sense to do given `-R` is specified in POSIX whereas `-r` is an extension from what I can see.

What exactly is an Apple style bundle and what does that have to do with the LLVM lit tests?

https://github.com/llvm/llvm-project/pull/201463