Currently on every pull request Ghost would have a misleading "First-time contributor" role.
Also, if the issue author is a Ghost, all other ghosts who commented will be labeled as authors even if they are different ghosts.
I've added a missing check to abort all other permission and contribution checks early if the user is a ghost. Also applies to other system users, as suggested by @earl-warren.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6766
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>
