[Peft] fix saving / loading when unet is not "unet" (#6046)
* [Peft] fix saving / loading when unet is not "unet"
* Update src/diffusers/loaders/lora.py
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
* undo stablediffusion-xl changes
* use unet_name to get unet for lora helpers
* use unet_name
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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
