Bug 20900: Add CPL branch in t_Batch.t too

Bug 20900: Add CPL branch in t_Batch.t too

Same fix as previous patch.

Test plan:
Run t/db_dependent/Labels/t_Batch.t (without CPL branch)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 1ad0724b804970fe9ca8e8333b1fb0b893c28cf4)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>