[flang-commits] [flang] [flang] Emit `argNo` debug info only for `func` block args (PR #93921)

[Abid Qadeer via flang-commits]

https://github.com/abidh approved this pull request.

Thanks for the fix. Looks good to me apart from the small nit. 

https://github.com/llvm/llvm-project/pull/93921