IP claim references are empty when created with an ephemeral IP on a NAT or LoadBalancer

[balpert89]

k get ngw.networking.ironcore -n balpert-test network-ngw-test

NAME               IPS             AGE
network-ngw-test   93.188.244.25   3h47m


k get ipaddresses.core -n ironcore-net-system

NAME            CLAIMREF                                                                                      AGE
93.188.244.25   ips.core.apinet.ironcore.dev ironcore-net-system/d516890d-e860-4c7e-b718-3061e226b170-n5mbp   125m


k get ip.core -n ironcore-net-system
NAME                                         TYPE     IP              CLAIMREF                                                                          AGE

d516890d-e860-4c7e-b718-3061e226b170-n5mbp   Public   93.188.244.25   <none>                                                                            142m