Airspeed selector: fix condition for messaging (#19173)

Change warning message after airspeed failure on the ground, 
recommend RTL only if flying.

src/modules/airspeed_selector/airspeed_selector_main.cpp

@@ -593,9 +593,13 @@ void AirspeedModule::select_airspeed_and_publish()
 
 	// print warning or info, depending of whether airspeed got declared invalid or healthy
 	if (_valid_airspeed_index != _prev_airspeed_index &&
-	    (_number_of_airspeed_sensors > 0 || !_vehicle_land_detected.landed) &&
+	    _number_of_airspeed_sensors > 0) {
-	    _valid_airspeed_index != _prev_airspeed_index) {
+		if (_vehicle_status.arming_state == !vehicle_status_s::ARMING_STATE_ARMED && _prev_airspeed_index > 0) {
-		if (_prev_airspeed_index > 0) {
+			mavlink_log_critical(&_mavlink_log_pub, "Airspeed sensor failure detected. Check connection and reboot.\t");
+			events::send(events::ID("airspeed_selector_sensor_failure_disarmed"), events::Log::Critical,
+				     "Airspeed sensor failure detected. Check connection and reboot");
+
+		} else if (_prev_airspeed_index > 0) {
 			mavlink_log_critical(&_mavlink_log_pub, "Airspeed sensor failure detected. Return to launch (RTL) is advised.\t");
 			events::send(events::ID("airspeed_selector_sensor_failure"), events::Log::Critical,
 				     "Airspeed sensor failure detected. Return to launch (RTL) is advised");