Bug 24446: Add datesent/datecancelled handling to GetTransfersFromTo

Bug 24446: Add datesent/datecancelled handling to GetTransfersFromTo

With the first uses of Koha::Item->request_transfer and
Koha::Item::Transfer->cancel having been added, we need to update
GetTransferFromTo to respect transfers that have been requested but
not yet sent and not cancelled.

Test plan
1/ Run the included unit test
2/ Confirm the "Transfers to recieve" page loads
3/ Signoff

Signed-off-by: Kathleen Milne <kathleen.milne@cne-siar.gov.uk>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>