Issue Summary

Incident timeline API does not show the service name/Responder Name in the entries when a service/Responder is added to the incident.

Steps to Reproduce

1. Create an incident.
2. Add a Service/Responder to the incident from the UI
3. The Service/Responder name is displayed as expected in the incident timeline (UI)
4. However, the service/Responder name is not displayed in the entires when an API call is made to get the incident timeline entries.

Also,
If there are any Slack messages added to the Timeline, the message is displayed on the Timeline, but the API response does not display the actual message.

Expected Results

The incident timeline API should return the service/responder name for the type 
IncidentImpactedServiceAdded and ** 
IncidentImpactedServiceRemoved, and the Slack Message added.

Actual Results

{
   "id":"IncidentImpactedServiceRemoved_a747ff70-efab-5c04-8854-a4295aa7a84e",
   "group":"incident",
   "type":"IncidentImpactedServiceRemoved",
   "eventTime":"2022-07-26T09:24:28.4Z",
   "hidden":false,
   "actor":{
      "name":"SJA User1",
      "type":"user"
   },
   "title":{
      "type":"plain_text",
      "content":"Impacted service removed"
   }
}

Workaround

Some details can be fetched using multiple request such as

• using the responder alert IDs from the list incident timeline API request and then use those IDs in the
  • incident API request
  • Alert logs API request

Currently, there is no known workaround for name of the service added