[clang] [Clang][Sema][OpenMP] Allow `num_teams` to accept multiple expressions (PR #99732)

[Johannes Doerfert via cfe-commits]

https://github.com/jdoerfert commented:

I think this is almost ready. Only missing thing is the >3 argument check and test.

https://github.com/llvm/llvm-project/pull/99732