Fauxton - Add process_status field in result table of active tasks

## Summary

As a user, it would be convenient to see the process_status value for a compaction job. This is because smoosh may start a compaction job and have some progress before suspending it because it's outside the window for processing.

## Desired Behaviour

When going to the Active Tasks section of Fauxton, it would be nice to display the process_status label and value in the status column.

Start in Fauxton's Active Tasks section and inspect how the result table builds its status column. Trace how compaction task data exposes process_status, then add the label and value to that column. Done means active compaction tasks show process_status, including suspended jobs with progress, without disrupting existing status display.

Written by the indexing model from the issue text.