- This is another regression from
5a0bc35799, where the default value was
changed to "alphabetically" because it relied on `ExploreDefaultSort`
providing a fallback value.
- Set the default value for `EXPLORE_DEFAULT_SORT` to `recentupdate`,
this was already the behavior explicitly for existing users of this setting
but with 5a0bc35799 it didn't provide a
explicit fallback to `recentupdate`. So opting for a 'easy' fix, that
doesn't add boilerplate code to those instances.