Bug 33888: (bug 22375 follow-up) Add missing USE KohaDates

Bug 33888: (bug 22375 follow-up) Add missing USE KohaDates

Bug 22375 added use of KohaDates without the USE statement.

Test plan:
Make sure you have overdues and go to circ/branchoverdues.pl
Without this patch you get a 500
  Template process failed: undef error - : filter not found at /kohadevbox/koha/C4/Templates.pm line 127
With this patch applied you can see the overdue list

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>