**Backport:** https://codeberg.org/forgejo/forgejo/pulls/7355
- Always initialize `RequestedReviewers` and `RequestedReviewersTeams`, this avoids the JSON encoder from encoding it to the zero value `null` and instead return a empty array.
- Resolves#4108
- Integration test added.
Co-authored-by: ThomasBoom89 <thomasboom89@noreply.codeberg.org>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7365
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
Co-committed-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
