Rollup merge of #60511 - taiki-e:libstd-intra-doc, r=Dylan-DPC

Rollup merge of #60511 - taiki-e:libstd-intra-doc, r=Dylan-DPC

Fix intra-doc link resolution failure on re-exporting libstd

Currently, re-exporting libstd items as below will [occur a lot of failures](https://gist.github.com/taiki-e/e33e0e8631ef47f65a74a3b69f456366).
```rust
pub use std::*;
```

Until the underlying issue (#56922) fixed, we can fix that so they don't propagate to downstream crates.

Related: https://github.com/rust-lang/rust/pull/56941 (That PR fixed failures that occur when re-exporting from libcore to libstd.)

r? @QuietMisdreavus