[llvm] [MC][X86] Set SHF_X86_64_LARGE on mergeable constant sections for large code-model (PR #190903)

[Arthur Eubanks via llvm-commits]

https://github.com/aeubanks commented:

missing test for when `!SectionSuffix.empty()`?

https://github.com/llvm/llvm-project/pull/190903