[lld] [LLD][COFF] Set __guard_flags to CF_INSTRUMENTED if any object is instrumented (PR #115374)

[via llvm-commits]

https://github.com/alvinhochun approved this pull request.

Ah okay. If it doesn't set `CF_FUNCTION_TABLE_PRESENT`, then it should be alright.

https://github.com/llvm/llvm-project/pull/115374