Use the state machine methods to set state
Use the state machine methods to set state

These were being set by directly setting the value on the db.  This is
at odds with the way state machine should be used.  I have refactored
the factories to use the named state methods.

ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments