After initial setup on remote integration remains in disconnected state

[zehnm]

A fresh setup on the remote (e.g. after a factory reset) leaves the integration in DISCONNECTED state. At least from the remote's view.
However, the integration is not showing any connection issue and is communicating with HA.
Sending connect events (either through web-configurator, or manually with the Core-API) has no effect, since the internal state is already CONNECTED. There's also no device_state event sent back:

integration-home-assistant/src/controller/handler/r2_event.rs

Lines 26 to 30 in bbd3f6e

	R2Event::Connect => {
	if self.device_state != DeviceState::Connected {
	ctx.notify(ConnectMsg::default());
	}
	}

After sleep & wakeup, the state is synchronized and the integration is working. Same happens after a reboot.

Discovered while testing unfoldedcircle/feature-and-bug-tracker/issues/237 after user reports of having to reboot the remote.

Required fixes:

• Always send the device_state event back after receiving the connect event.
• Make sure the device state is sent back after setup (might be already the case with the above fix).