cannode prearm by default enable on ArmingStatus

- ArmingStatus DroneCAN message STATUS field is only set to true based on
arming_status.armed

- Cannode prearm state is set to true always when ArmingStatus DroneCan
message is received

src/drivers/uavcannode/Subscribers/ArmingStatus.hpp

@@ -89,6 +89,7 @@ private:
 			actuator_armed.armed = false;
 		}
 
+		actuator_armed.prearmed = true;
 		actuator_armed.timestamp = hrt_absolute_time();
 		_actuator_armed_pub.publish(actuator_armed);
 	}