21c6bf766e
Two new opt-in interop cases drive the production
connectReconnectingNestsListener against the real nostrnests
relay (set -DnestsInterop=true to run):
* reconnecting_wrapper_round_trips_frames_via_real_relay —
happy-path validation that the new MutableSharedFlow-backed
pump doesn't drop frames against real moq-lite framing.
* reconnecting_wrapper_keeps_handle_alive_across_session_swap —
custom connector opens two real sessions; we close the first
mid-stream, observe the orchestrator's automatic reconnect,
and confirm that frames published after the swap arrive on
the SAME consumer-facing SubscribeHandle. Real-wire version
of the in-process test added in the previous commit.