[Security Solution] use event to use current user and not kibana syst…

…em (#157907)

FIX #157882

Security solution user needs to use the current user instead of using
kibana system user to fetch alert.

@michaelolo24 will push a follow up PR to write unit test so nobody can
change this value anymore!!!

Co-authored-by: Kibana Machine <[email protected]>

x-pack/plugins/security_solution/public/detections/components/alerts_table/index.tsx

@@ -315,7 +315,7 @@ export const AlertsTableComponent: FC<DetectionEngineAlertTableProps> = ({
   });
 
   const { DetailsPanel, SessionView } = useSessionView({
-    entityType: 'alerts',
+    entityType: 'events',
     scopeId: tableId,
   });