SupplierInvoicePicker shows overdue invoices as payable candidates, but
the CAS update in the match route omitted 'overdue' from its status
whitelist. This caused the update to return 0 rows for any overdue
invoice, committing a journal entry and then orphaning it before
returning MATCH_SI_NOT_OPEN — making the match appear to fail due to a
concurrent request. The v1 route already had this correct.
Signed-off-by: Jonas Flodén <jonas@floden.nu>