Dose sam2-unet support sam2.1

[AaddX-ai]

I find sam2.1 have Better accuracy than sam2， have u plan to support?

[xiongxyowo]

Hi, we have tried replacing backbone with SAM2.1 and experimented on several public datasets, but the difference in results is very small. Currently we have no plans to release SAM2.1-UNet as such migration will cause some code conflicts. You may try it yourself.