Weird <const host: bool = true> generics popping in beta docs #116629
Description
Examples include:
- https://doc.rust-lang.org/beta/core/ptr/struct.NonNull.html#method.dangling
- https://doc.rust-lang.org/nightly/core/cell/struct.OnceCell.html#method.new
- Most of https://doc.rust-lang.org/nightly/core/net/struct.Ipv6Addr.html
This is probably related to the recent addition of #[rustc_host].
