- Consider executable files as a valid case when returning a downloadURL
for them. They are just regular files with the difference being the
executable permission bit being set.
- Not integration testing as it's not possible without adding adjusting
the existing repositories to have a executable file.
- Resolves https://codeberg.org/forgejo/forgejo/issues/1825
(cherry picked from commit ca32891d54)
72c9df8e45