Bug 33101: Restore OPAC basket detailed view

Bug 33101: Restore OPAC basket detailed view

The OPAC basket detailed view display is broken since since bug 32445.
This patch restore the usual operation.

TO TEST:

1. Add a biblio recor into the OPAC basket.
2. Click on the cart to display its content.
3. Click on More details
   => error 500
4. Apply the patch, and repeat 3.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomás Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>