[clang] [OpenMPIRBuilder] Add ThreadLimit and NumTeamsUpper clauses to teams clause (PR #68364)

[via cfe-commits]

shraiysh wrote:

> Is this change for OMP 5.0 and before?

No, it should be for all the standards since `num_teams` was introduced. Why do you think it is for OMP 5.0 and before, but not for 5.1 and 5.2? I will try to address it and clarify.

https://github.com/llvm/llvm-project/pull/68364