On a Zoo, Hanzo, Pars, SPC or Osage host the validators page listed every L1
in the registry, and /dex rendered the Lux D-Chain markets. The network total
now sums every L1 only on the Lux primary-network explorer, and /dex answers
404 anywhere else. isPrimaryNetworkHost() is the same predicate as
isPrimaryNetworkExplorer(), taking the host from the request.
Co-authored-by: Hanzo Dev <[email protected]>