Invalid "connection sharing with tconnect app" errors when tconnect app is not being used

[jwoglom]

The ControlX2 app uses PumpX2, and it receives the "Connection sharing with tconnect app" TandemError when the app service is killed by the system and is restarted. PumpX2 needs to be updated to properly track when the pump is already connected with itself previously, but the app itself has been severed.