akka.extensions loses ClusterClientReceptionistExtensionProvider and the whole
akka.cluster.client block (buffer-size / reconnect-timeout / receptionist.role) goes with
it. The DistributedPubSub extension and the maximum-frame-size / log-frame-size-exceeding
canary both stay — DPS is the pair-local transport and the frame canary guards every
remoting message, neither of which the cross-mesh deletion touches.
MeshTransportHoconTests drops its three ClusterClientSettings/ClusterReceptionistSettings
asserts and keeps the frame-size pin and the DPS-extension pin, renamed since it no longer
has a receptionist to survive alongside.
Joseph Doherty
d67a7e5d0b