Steps to reproduce:
1. Prepare a workflow with retry strategy "hold"
2. Run that workflow with a recording that will fail the workflow
3. Press "Cacncel" in hold/review to dismiss the workflow
The workflow disappears from the UI. However, the associated mediapackage remains orphaned in the working space area.
The workflow is dismissed and the files are removed (cleanup).
When the retry strategy is used with the value "hold" for a given operation, and that operation fails, a new operation is inserted into the workflow that puts it on hold and asks the user for resolution. If the user choses "none", the workflow service will fail that operation that has just been inserted but won't use the error handling workflow that had been set on the originally failing operation.
Merged into r/1.4.1 with rev fe33a79.