[llvm] [mlir] [flang][OpenMP] Support `target ... nowait` (PR #111823)

[Pranav Bhandarkar via llvm-commits]

https://github.com/bhandarkar-pranav approved this pull request.

Thank you, @ergawy. LGTM, just a minor nit.


https://github.com/llvm/llvm-project/pull/111823