[clang] [Driver] Ensure ToolChain::LibraryPaths is not empty for non-Darwin (PR #87866)

[YunQiang Su via cfe-commits]

wzssyqa wrote:

Will the contents of `empty.asm` correct if `lib/<triple>/clang_rt.profile.lib` doesn't exist?
I mean, will `empty.asm` contains `/DEFAULTLIB:clang_rt.profile-x86_64.lib` then?

https://github.com/llvm/llvm-project/pull/87866