policy: fix `cilium bpf policy get` command output
policy: fix `cilium bpf policy get` command output

When the protocol in policy map key is ICMP or ICMPv6 and port is 0, avoid protocol field getting changed to "ANY" in `cilium bpf policy get` command output

Signed-off-by: Tomoki Sugiura <280d4a025573dd18442852bcd6ffed60d3861ad6@gmail.com>

cilium/cilium,tklauser/cilium,michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,tklauser/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,tklauser/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium