Bug 36317: Koha::Biblio->host_items must use me.itemnumber

Bug 36317: Koha::Biblio->host_items must use me.itemnumber

Koha::Biblio->host_items fails with search_ordered() because of ambiguous column 'itemnumber' in where clause.
It must use me.itemnumber like in Koha::Biblio->items

Test plan :
prove t/db_dependent/Koha/Biblio.t

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Emmi Takkinen <emmi.takkinen@koha-suomi.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>