Primitive fn implementation list for Debug is ordered pretty much randomly

[sugar700]

If you check https://doc.rust-lang.org/std/primitive.fn.html, there is no real ordering for Debug implementations.

https://doc.rust-lang.org/std/fmt/trait.Debug.html on the other hand has a reasonable ordering for those functions.

I noticed this issue initially on https://www.reddit.com/r/rustjerk/comments/gcdb7m/varargs_at_home/.

[GuillaumeGomez]

They are sorted in the sidebar, but just like the rest of the content outside of the sidebar, it is ordered by the order rustdoc discovers them.

[sugar700]

Fixed in #108080.