[Core] `is_cosxl_edit` arg in SDXL ip2p. (#7650)
* is_cosxl_edit arg in SDXL ip2p.
* Empty-Commit
Co-authored-by: Yiyi Xu <yixu310@gmail.com>
* doc
* remove redundant logic.
* reflect drhuv's comments.
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Co-authored-by: Yiyi Xu <yixu310@gmail.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
