Wan-Animate-2 (authored by @kelseyee) (#14413)
* support wan-animate-2
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Co-authored-by: kelseyee <971704395@qq.com>
Co-authored-by: yiyi@huggingface.co <yiyi@huggingface.co>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: sayakpaul <spsayakpaul@gmail.com>
