CI: Flow validation failure in integration test

[sayboras]

Happens in https://github.com/cilium/proxy/actions/runs/17765367951/job/50546544336

❌ 1/6 tests failed (4/46 actions), 14 tests skipped, 0 scenarios skipped:
Test [l7-lb]:
  🟥 l7-lb/pod-to-l7-lb-service-hair-pinning:curl-ipv4-0: cilium-test-1/l7-lb-fff657b75-nvhfk (10.244.0.135) -> cilium-test-1/l7-lb (10.245.11.229:8080): Receiving flows from Hubble Relay: received unknown message: &{"source:OBSERVER_EVENTS_QUEUE  num_events_lost:1  cpu:{}"}
  🟥 l7-lb/pod-to-l7-lb-service:curl-ipv4-0: cilium-test-1/client2-5f6d9498c7-gnbwc (10.244.0.130) -> cilium-test-1/l7-lb (10.245.11.229:8080): Flow validation failed for peer cilium-test-1/client2-5f6d9498c7-gnbwc: 1 failures (first: 0, last: 16, matched: 3)
  🟥 l7-lb/pod-to-l7-lb-service:curl-ipv4-1: cilium-test-1/client3-576ffd549d-j824l (10.244.1.252) -> cilium-test-1/l7-lb (10.245.11.229:8080): Flow validation failed for peer cilium-test-1/client3-576ffd549d-j824l: 1 failures (first: 0, last: 51, matched: 3)
  🟥 l7-lb/pod-to-l7-lb-service:curl-ipv4-2: cilium-test-1/client-64d966fcbd-m7lx2 (10.244.0.187) -> cilium-test-1/l7-lb (10.245.11.229:8080): Flow validation failed for peer cilium-test-1/client-64d966fcbd-m7lx2: 1 failures (first: 0, last: 16, matched: 3)