API or UI/People action are not differentiated in Activity log

Issue Summary

Audit log and Activity log are not showing the same level of information in regards to the method of how an edit is made.

Steps to Reproduce

1. Edit an item via API
2. Edit the same item via the UI
3. Open the work item and check the audit log-  the API action will be displayed as "Via API"
   
4. Open the activity log and filter by either work item ID or the user from whom the action originated- The API action will show slightly differently when checking side by side, however, no written indication is displayed for the API action.
   

Expected Results

An API action should be clearly defined in both areas of logs to differentiate from a User/UI action

Actual Results

The API action will show slightly differently when checking side by side, however no written indication is displayed for the API action.

Workaround

The current workaround is to check the audit log of the item directly for the desired level of information.