Finish orders on deletion of FileWatch

Current Situation

• File orders take the completed state if the related file is still available when the order completes the workflow.
• If a FileWatch is deleted then file orders in the completed state will be "orphaned". Such orders cannot be cancelled by users.
• Similar behavior applies if a FileWatch is modified as deployment of FileWatches in JOC Cockpit corresponds to a delete/store operation.

Desired Behavior

• When a FileWatch is deleted then orders in the completed state should consider the related file being non-existent and should leave the workflow.