2.0 ignored the first argument of the Device constructor in silence and
had removed setMqttClient(), so a 1.x call threw a TypeError. Both are
deprecated shims now, as the design lists them: setMqttClient() is back
and does nothing, a client given to the constructor is ignored, and each
says once in a process what to do. The line goes to the log hook of the
bridge; a device on no bridge has none and emits a DeprecationWarning
(ALEX2NODE_DEVICE_CLIENT, ALEX2NODE_SET_MQTT_CLIENT).
null and undefined as the client warn nothing: the bridge passes null.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>