Hotspot view model loses state when activity gets recreated
Test instructions:
- Enable the developer option "don't keep activities" (Device Settings → System → Developer options → Apps section → Don't keep activities)
- Open briar
- Go to the share briar offline activity (Briar Settings → Share Briar offline)
- Start sharing (revealing the Wifi configuration for the receiving device)
- Switch to any different app
- Switch back to briar
- Observe that you're back at the intro screen of the offline hotspot feature
- Start sharing again (revealing the Wifi configuration again)
- Make sure that sharing is still working, i.e. connect with a second device and download briar
