RNode - No Radio Stand-By on force-closed app

[fr33n0w]

Describe the Bug
In earlier versions , when closing Sideband on android, with shutdown function in the app menù, or either by force-closing the app manually, or forced by the system, RNode goes back to the default screen "Hardware Init OK, TRX Ready" and disables the radio communication.

In the last 1.81 version, tested on Heltec v3 , when Sideband application is force-closed manually or by the system, while bluetooth icon changes as normal behaviour, the display remain on the "working radio" screen, with channel load and channel radio grapchic and it keeps receiving signals and the led blinks on receiving data, but without software attached to it.

This problem is not happening when Sideband is closed using the shutdown function.

Hope that i was clear enough :)

To Reproduce

1. Connect an Heltec v3 via BLE to an android phone.
2. Start Sideband with RNode hardware and bluetooth and ble function ON.
3. Force close Sideband app and look at the display.

Expected Behavior
When closing Sideband, with shutdown or either by force-closing it, it's supposed that RNode goes back to the "stand by display" with radio module disabled (Hardware init ok)