Documentation improvement request: Multi-primary multi-network with eastwestgateway

[Devern]

Given that multi-primary, multi-network configurations using eastwestgateway require mTLS AUTO_PASSTHROUGH, can we add a hint on the following page around the type of LoadBalancer? I recently struggled testing a deployment that seemed to be set up correctly, but requests were seeing 503 responses with TLS mismatches because my AWS ELB was using L7 HTTP listeners instead of L4 TCP.

https://github.com/istio/istio.io/blob/master/content/en/docs/setup/install/multicluster/multi-primary_multi-network/index.md

https://istio.io/latest/docs/setup/install/multicluster/multi-primary_multi-network/