message: simplify component rendering logic
  Per feedback here:
diff: @@ -243,15 +243,13 @@ export const IncidentListItem = ({
  {incident.incidentLink && incident.incidentNumber && (
  <ListItemSecondaryAction>
  - {!readOnly ? (
  + {!readOnly && (
  <IncidentAction
  currentPhase={incident.currentPhase || ''}
  incidentId={incident.entityId}
  resolveAction={handleResolveIncident}
  acknowledgeAction={handleAcknowledgeIncident}
  />
  - ) : (
  - ''
  )}
  <Tooltip title="View in Splunk On-Call" placement="top">
  <IconButton
  