Bug 16500: Catch two warns in TestBuilder.t with warning_like

Bug 16500: Catch two warns in TestBuilder.t with warning_like

When testing a wrong case in TestBuilder.t, two warns show up.
We can catch them with warning_like.

Test plan:
Run t/db_dependent/TestBuilder.t

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 395ac8835a582a2bb38aaa3259c4196b81142dd4)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>