[clang] [LinkerWrapper] Make `-Xoffload-linker` match `-Xlinker` semantics (PR #101032)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> Do we have some sort of documentation where this change of behavior needs to be communicated?

Could probably specify it more in the docs.

https://github.com/llvm/llvm-project/pull/101032