Flaky test `udp.udp_drop_packets`

## Description

```
%%% listeners_SUITE ==> udp.udp_drop_packets: FAILED
%%% listeners_SUITE ==> {test_case_failed,"Telemetry event 'dropped' not triggered"}
..................................
```

## Expected Behavior or Outcome

- Test is not randomly failing

## Acceptance Criteria

- Flaky test is fixed, replaced or removed

## Resources/References

N/A

## Notes

N/A
