Auto detect cluster ip addr family support

[lgadban]

kgateway version

n/a

Is your feature request related to a problem? Please describe.

As part of #10755 we will default DNS clusters to V4_PREFERRED and add a global settings to allow tuning this value.

Ideally, we would be able to determine a "more correct" default by detecting which ip address families are supported in the K8s cluster.

Describe the solution you'd like

DNS clusters to use the 'correct' ip addr family for a given cluster

Describe alternatives you've considered

No response

Additional Context

No response