Suppress OSD stats if disarming from crash-flip or untriggered launch control

The OSD stats provide no meaningful information and are just an annoyance when exiting these special states.

For Launch Control the stats will be displayed if the launch is triggered and normal flight occurrred.

src/test/unit/vtx_unittest.cc

@@ -173,4 +173,5 @@ extern "C" {
     bool usbCableIsInserted(void) { return false; }
     bool usbVcpIsConnected(void) { return false; }
     void pidSetAntiGravityState(bool newState) { UNUSED(newState); }
+    void osdSuppressStats(bool) {}
 }