Paths in macro visibilities are not linkified

[camelid]

It looks like we don't use links in macro visibilities:

#![feature(decl_macro)]

pub mod inner1 {
    pub mod inner2 {
        pub mod inner3 {
            pub(in crate::inner1) macro foo() {}
        }
    }
}

@jyn514 thinks this might be a bug.

Originally posted by @camelid in #82815 (comment)

[camelid]

Note: I haven't tested macro_rules! (I think pub macro_rules! landed recently) nor proc macros.