Align optional metrics manifests with the default 8080 metrics endpoint

[Copilot]

This addresses the review feedback on r3704368527: the metrics Service was switched to metrics:8080, but optional metrics-related manifests still referenced HTTPS/8443, creating mismatched configurations when those components are enabled. This PR makes those optional manifests consistent with the current default metrics endpoint.

• Service endpoint alignment

  • Updated config/default/metrics_service.yaml to expose name: metrics on port/targetPort: 8080.

• Prometheus monitor alignment

  • Updated config/prometheus/monitor.yaml to scrape port: metrics with scheme: http so ServiceMonitor matches the Service endpoint.

• NetworkPolicy alignment

  • Updated config/network-policy/allow-metrics-traffic.yaml ingress port from 8443 to 8080.

• Metrics patch alignment

  • Updated config/default/manager_metrics_patch.yaml to bind metrics on :8080 so enabling the patch no longer conflicts with the Service port.

• Generated install bundle refresh

  • Regenerated manifests/setup/setup.yaml to reflect the above configuration updates.

# Before
endpoints:
  - port: https
    scheme: https

# After
endpoints:
  - port: metrics
    scheme: http