fix: include sessionID in sse logout event (#2327)

services/clientlog/pkg/service/events.go

@@ -16,4 +16,5 @@ type FileEvent struct {
 type BackchannelLogout struct {
 	UserID    string `json:"userid"`
 	Timestamp string `json:"timestamp"`
+	SessionID string `json:"sessionid"`
 }

services/clientlog/pkg/service/service.go

@@ -300,5 +300,6 @@ func backchannelLogoutEvent(e events.BackchannelLogout) (string, []string, Backc
 	return "backchannel-logout", []string{e.Executant.GetOpaqueId()}, BackchannelLogout{
 		UserID:    e.Executant.GetOpaqueId(),
 		Timestamp: e.Timestamp.String(),
+		SessionID: e.SessionId,
 	}
 }