Bug 33245: TestBuilder: Default value for anonymized

Bug 33245: TestBuilder: Default value for anonymized

When we create a patron with TestBuilder, we normally
do not expect an anonymized status. This will certainly
hold for the patrons we are creating for testing is_active
in a following patch.

Test plan:
Run t/db_dependent/Koha/Patron.t
Run t/db_dependent/Koha/Patrons.t

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>