From
https://github.com/go-gitea/gitea/issues/31018#issuecomment-2119622680.
This commit removes the link to a deleted branch name because it returns
a 404 while it is in this deleted state. GitHub also throws a 404 when
navigating to a branch link that was just deleted, but this deleted
branch is removed from the branch list after a page refresh. Since with
Gitea this deleted branch would be kept around for quite some time
(well, until the "cleanup deleted branches" cron job begins), it makes
sense to not have this as a link that users can navigate to.
(cherry picked from commit 1007ce764ea80b48120b796175d7d1210cbb6f74)
0e0ab349fb