When --forward-pass-metrics-ipc-name is left unset the reporter generates an
endpoint and has to hand it to external consumers (the documented contract is
that they read it back from the server config). That readback is the scheduler's
get_internal_state, which already reports get_context().resolved_server_args_dict(),
so the write moves to get_context().override and the read alongside it to
get_observability() — the endpoint still shows up in /server_info's
internal_states, and the ServerArgs instance stops being a message bus.
The test's server_args stand-in (a SimpleNamespace with a hand-rolled override)
becomes a real published config, so the reporter exercises the same accessors as
production.
Writer ratchet 19 -> 18.
Cheng Wan
aa3bbbc6e8