When the user confirms removal although we have linked orders,
we should cancel them.
Test plan:
Add order line to a basket.
Goto newly added biblio record, remove items, remove biblio.
Notice the warning about attached order lines.
Confirm. Check the basket again after deletion took place (cancelled line).
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl> Signed-off-by: David Nind <david@davidnind.com> Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>