Function component_dyn_tween_system 

pub fn component_dyn_tween_system<C>() -> ScheduleConfigs<ScheduleSystem>
where
    C: Component<Mutability = Mutable>,

System alias for component_tween_system that uses boxed dynamic Interpolator. (Box<dyn Interpolator)

This currently exists for backward compatibility and there’s not really any big reason to deprecate it just yet. You might want to use component_tween_system::<BoxedInterpolator<...>>() for consistency