Follow-up to d58c542579 for Forgejo.
By default, Gitea does not select any map service that can be used
to introduce a 'Show this place on a map' button in the location
field of a user profile. Before I tried upstreaming this change to
Gitea, this was the case in Forgejo. This patch essentially recovers
this functionality, which is nice for public-facing instances and
communities.
Links to original PRs:
- https://codeberg.org/forgejo/forgejo/pulls/1076
- https://github.com/go-gitea/gitea/pull/26214
(cherry picked from commit bb187d5f61)