Slider - Images jitter at end of loop when in vertical mode and the images are not the same height

Hi,

It appears that when you rotate the Slider component into vertical mode after setting `vertical: true`, the images have a "jitter" effect where they seem to jump around when the loop is reset. The expected behavior is that the images smoothly transition regardless of the point of the loop you're in.

I was able to replicate the issue here -> https://codesandbox.io/embed/react-slick-playground-forked-rckk2e?fontsize=14&hidenavigation=1&theme=dark