[lld] [ELF] Change .debug_names tombstone value to UINT32_MAX/UINT64_MAX (PR #74686)

[Alexander Yermolovich via llvm-commits]

ayermolo wrote:

@dwblaikie Are you good with how this patch looks? It would be great to close on it soon. It's the last piece missing for full enablement of .debug_names + types. :)

https://github.com/llvm/llvm-project/pull/74686