**Backport:** https://codeberg.org/forgejo/forgejo/pulls/8448
When a mail notification is sent because of a failed pull request run,
the body will show:
Branch: #661 (f57df45)
where #661 is the number of the pull request and not the branch. This
is because run.PrettyRef() is used and has a misleading special case
returning a PR number instead of a ref.
Remove the textual description as it can easily be discovered from the
run web page linked in the mail.
Co-authored-by: Earl Warren <contact@earl-warren.org>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8455
Reviewed-by: Earl Warren <earl-warren@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>