fix(dacc): issue on event-duration event, group3 was not defined

src/targets/services/aggregatorUsageEvents.ts

@@ -258,6 +258,7 @@ const calculPeriodBetweenFirstConnectionAndFirstChallenge = async (
       group1: { start_event: 'first_session' },
       // eslint-disable-next-line @typescript-eslint/camelcase
       group2: { end_event: 'first_challenge' },
+      group3: { params: '' },
     }
     const result = await sendIndicator(periodIndicator, client)
     if (result) {