App shows error if user switches printer while current printer is trying to connect

[Clon1998]

If a user manages to switch the printer, while the currently selected one is still fetching (Either, Jrpc, Or the Klippy/Printer) a Stream has been listed error is thrown.

I/flutter ( 6995): Bad state: Stream has already been listened to.
I/flutter ( 6995): #0   _StreamController._subscribe (dart:async/stream_controller.dart:676:7)
I/flutter ( 6995): #1   _ControllerStream._createSubscription (dart:async/stream_controller.dart:827:19)
I/flutter ( 6995): #2   _StreamImpl.listen (dart:async/stream_impl.dart:471:9)
I/flutter ( 6995): #3   _AsBroadcastStream.listen (dart:async/stream_impl.dart:738:31)
I/flutter ( 6995): #4   _extension#0.lastCancelable (package:riverpod/src/async_notifier/base.dart:542:20)
I/flutter ( 6995): #5   FutureHandlerProviderElementMixin.handleStream.<anonymous closure> (package:riverpod/src/async_notifier/base.dart:296:14)
I/flutter ( 6995): #6   FutureHandlerProviderElementMixin._handleAsync (package:riverpod/src/async_notifier/base.dart:370:47)
I/flutter ( 6995): #7   FutureHandlerProviderElementMixin.handleStream (package:riverpod/src/async_notifier/base.dart:285:5)
I/flutter ( 6995): ⛔ Error in Widget