[BUG] no progress messages during retrieve since copado deployer v20

[JoernBerkefeld]

Current Behavior

It simply says "starting retrieve" end then eventually it gives us a success message (or an error).
but the underlying function does run successfully. simply reloading the page after the result record indicated success will lead to the requested outcome of a refreshed page

Expected Behavior

we would want to be able to see progress messages just like on the result record (and just like under v19.16)

Steps To Reproduce

1. Open a user story's commit changes page
2. click on refresh
3. wait (and open results list in a new window)
4. See success/error...

Additional comments

mcdo_RetrieveTable.js has the relevant logic for this in subscribeToCompletionEvent()

Enable debug mode for your user to see the relevant log output (after adding more console.logs)

[JoernBerkefeld]

Duplicate of #299