[clang] [coroutines] Introduce [[clang::coro_disable_lifetimebound]] (PR #76818)

[Ilya Biryukov via cfe-commits]

https://github.com/ilya-biryukov approved this pull request.

I agree we could add parameter attributes later! LGTM!

https://github.com/llvm/llvm-project/pull/76818