fix: remap Service egress ports to targetPort for NetworkPolicy generation (#943) (#944)

* fix: remap Service egress ports to enforcement ports for NetworkPolicy (#943)
eBPF observes the Service port before kube-proxy DNAT, but CNIs enforce on
the pod targetPort. Resolve numeric, omitted, and named targetPorts (via
EndpointSlice with Endpoints fallback) into NetworkNeighbor.Ports when
serializing egress neighbors so generated policies open the port the CNI
actually matches.
Companion helm-charts PR required for EndpointSlice RBAC in production.

Signed-off-by: Gaurav Chaudhary <chaudharygaurav2004@gmail.com>

* fix: account for all resolved Service ports and guard nil Endpoints

Signed-off-by: Gaurav Chaudhary <chaudharygaurav2004@gmail.com>

* fix: restore closing brace in Service port regression test

Signed-off-by: Gaurav Chaudhary <chaudharygaurav2004@gmail.com>

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Signed-off-by: Gaurav Chaudhary <chaudharygaurav2004@gmail.com>
Signed-off-by: Gauarv Chaudhary <137998824+ANAMASGARD@users.noreply.github.com>