ipfamily not set in udplistener

[woodgear]

used here.

gateway/internal/xds/translator/listener.go

Line 1067 in 59b2b29

if udpListener.IPFamily != nil && *udpListener.IPFamily == egv1a1.DualStack {

but not set here

https://github.com/woodgear/gateway/blob/59b2b29dbb27b22971fa3c51ef3b9039d989b61d/internal/gatewayapi/listener.go#L165

that will cause udproute could only listen on ipv4 or ipv6 not both.