Bug 25261: Checkout confirmation depending on syspref

Bug 25261: Checkout confirmation depending on syspref

With this follow-up patch, the intended confirmation of checkin based on
CircConfirmParts value is effective.

Sponsored-by: Royal College of Music [https://www.rcm.ac.uk/]
Sponsored-by: PTFS Europe [https://ptfs-europe.com/]
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>