init adjustments to ensure used topics are advertised early (primarily for logging)

- multi-EKF create each instance as soon as IMU & mag are advertised (before device id populated)

src/modules/sensors/vehicle_angular_velocity/VehicleAngularVelocity.cpp

@@ -46,6 +46,8 @@ VehicleAngularVelocity::VehicleAngularVelocity() :
 	ModuleParams(nullptr),
 	ScheduledWorkItem(MODULE_NAME, px4::wq_configurations::rate_ctrl)
 {
+	_vehicle_angular_acceleration_pub.advertise();
+	_vehicle_angular_velocity_pub.advertise();
 }
 
 VehicleAngularVelocity::~VehicleAngularVelocity()