isAvailable property
Get a Stream for the availability of a Bluetooth adapter.
If a user inserts or removes a bluetooth adapter from their devices this stream will update.
It will not necessarily update if the user enables/ disables a bluetooth adapter.
Will return Stream.value(false)
if isBluetoothApiSupported is false.
For non web platforms it will always return false
Implementation
@override
Stream<bool> get isAvailable => Stream.value(false);