agents: create dedicated events for stats processing

ers/ers.go

@@ -250,16 +250,21 @@ func (erS *ERService) processEvent(cgrEv *utils.CGREvent,
 			return
 		}
 
-		// Clone is needed to prevent data races if requests are sent
-		// asynchronously.
-		ev := cgrEv.Clone()
-
-		ev.Event[utils.ReplyState] = replyState
-		ev.Event[utils.StartTime] = startTime
-		ev.Event[utils.EndTime] = endTime
-		ev.Event[utils.ProcessingTime] = endTime.Sub(startTime)
-		ev.Event[utils.Source] = utils.ERs
-		ev.APIOpts[utils.MetaEventType] = utils.ProcessTime
+		ev := &utils.CGREvent{
+			Tenant: cgrEv.Tenant,
+			ID:     utils.GenUUID(),
+			Time:   utils.TimePointer(time.Now()),
+			Event: map[string]any{
+				utils.ReplyState:     replyState,
+				utils.StartTime:      startTime,
+				utils.EndTime:        endTime,
+				utils.ProcessingTime: endTime.Sub(startTime),
+				utils.Source:         utils.ERs,
+			},
+			APIOpts: map[string]any{
+				utils.MetaEventType: utils.ProcessTime,
+			},
+		}
 
 		if rawStatIDs != "" {
 			statIDs := strings.Split(rawStatIDs, utils.ANDSep)