[lld] [lld] Do not implicitly link non "public" libraries (PR #97639)

[Daniel Rodríguez Troitiño via llvm-commits]

drodriguez wrote:

My apologies. The phrase about being only useful to Apple was more about being able to link libraries restricted like that, but you are right that the restriction for linking against those libraries are still useful for everyone. We catch this problem early and avoided major issues, but it can be really bad if there's other "holes" in the implementation. Hopefully the issue you opened will catch the eye of someone.

https://github.com/llvm/llvm-project/pull/97639