[llvm] [XCOFF][obj2yaml] Support SymbolAlignmentAndType as 2 separate fields in YAML. (PR #76828)

[James Henderson via llvm-commits]

https://github.com/jh7370 requested changes to this pull request.

Requesting changes until pre-merge CI issues have been addressed.

https://github.com/llvm/llvm-project/pull/76828