Bug 38233: respect OPAC visibility for ILS-DI GetRecords

Bug 38233: respect OPAC visibility for ILS-DI GetRecords

This change makes the ILS-DI GetRecords service use the OPAC
version of the MARCXML and filters items based on their OPAC visibility

Test plan:
1. Apply the patch
2. koha-plack --restart kohadev
3. Go to http://localhost:8081/cgi-bin/koha/admin/preferences.pl?op=search&searchfield=ILS-DI
and enable syspref
4. Go to http://localhost:8081/cgi-bin/koha/admin/preferences.pl?op=search&searchfield=OpacHiddenItems
and add the following:
withdrawn: [1]
5. Go to http://localhost:8081/cgi-bin/koha/admin/preferences.pl?op=search&searchfield=hidelostitems
Change syspref to "Don't show"
6. Go to http://localhost:8081/cgi-bin/koha/catalogue/detail.pl?biblionumber=29
7. Add a withdrawn item and a lost item with barcodes of "test1" and "test2" respectively
8. Go to http://localhost:8080/cgi-bin/koha/ilsdi.pl?service=GetRecords&id=29
9. Note the items with barcodes test1 and test2 do not appear in the "items" tree and they don't
appear in the "marcxml" tree.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Pedro Amorim <pedro.amorim@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>