Autodetect identity domain
What do you want to improve?
Kiali should autodetect the identity domain setting rather than forcing users to set this manually: https://kiali.io/docs/configuration/kialis.kiali.io/#.spec.external_services.istio.istio_identity_domain. It comes from istio configmap trustDomain field.
I poked at this a bit and I think we should put this one on the back-burner until we do this: https://github.com/kiali/kiali/issues/7725. trustDomain is used extensively in validating hosts. It relies on a single value coming from the global config var. We can update each reference and pass the value down but we would still need to choose a primary at random until we finish https://github.com/kiali/kiali/issues/7725.