[clang] [CLANG][DWARF] Do not emit -ggnu-pubnames for split dwarf version 5 (PR #83331)

[Alexander Yermolovich via cfe-commits]

ayermolo wrote:

Another attempt. Had to return original https://github.com/llvm/llvm-project/pull/82840 because it was breaking a test on mac.

https://github.com/llvm/llvm-project/pull/83331