"Directly go to item in search if there is only one result" doesn't allow going back after a search

[Nemo157]

Reproduction:

• Go to https://doc.rust-lang.org/nightly/std/
• Click the gear next to the search field, enable "Directly go to item in search if there is only one result"
• Refresh page to ensure it's enabled (was required the first time I tried to reproduce, but seemed to work straight away the second time)
• Search for UnixStream
• You should be taken straight to https://doc.rust-lang.org/nightly/std/os/unix/net/struct.UnixStream.html
• Press "Back" in your browser

I expected this to happen: Go back to https://doc.rust-lang.org/stable/std/
Instead, this happened: Goes back to https://doc.rust-lang.org/stable/std/?search=UnixStream then instantly redirects forward again

[GuillaumeGomez]

Taking a look.

[GuillaumeGomez]

Fixed in #112707.