Issue Summary

'Process Step' info is missing in the API JSON file for Epics, Features

Steps to Reproduce

1. Retrieve the related Epic or Feature via API
2. Check the response

Expected Results

To see the 'Process Step' info in the response of Epics and Features. 
The need here is not to return the query results as IDs but to display the actual data. It may be good to emphasize.
(Now, only the Value Stream work item has this field.)

Actual Results

There is no 'Process Step' info in the API JSON file

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available.