If the search-match-redirect preference is set, Special:Search will immediately redirect to the first result if it is an exact match (and matches a few other criteria)
This functionality should be reimplemented in Special:MediaSearch as well, so that users who rely on this functionality don't find their workflow broken.
Acceptance criteria:
- With search-match-redirect preference set & when searching from the top-right search widget, Special:MediaSearch should redirect to exact matches (just like Special:Search does)