[llvm] [MC] Fix DWARF file table for files with empty DWARF (#119020) (PR #119229)

[NAKAMURA Takumi via llvm-commits]

chapuni wrote:

This causes emitting `.debug_line` w/o any dwarf options in `clang %.S`. Is it desired?

It makes object files contain the absolute path of build directory for building `llvm/lib/Support/BLAKE3`.

https://github.com/llvm/llvm-project/pull/119229