Slightly related to https://codeberg.org/forgejo/forgejo/pulls/11196, but it has no tests related to the change in that PR.
Added tests because I wanted those config options be tested, but haven't found any existing tests.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/11197
Reviewed-by: Beowulf <beowulf@beocode.eu>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>
