Bug 25555: Invert patron name in holdsqueue.tt

Bug 25555: Invert patron name in holdsqueue.tt

TEST PLAN:
1. Have multiple holds from multiple patrons and run the holds queue cron to populate the holds queue list.
2. Try sorting by patron and see that is sorts based on first name.
3. Apply patch
4. Try sorting again and now it should sort by surname.

Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 73e5032c4bf52ee72972a6fe8182d3fd5737716c)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>