[modular]support klein (#13002)
* support klein
* style
* copies
* Apply suggestions from code review
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Álvaro Somoza <asomoza@users.noreply.github.com>
* Update src/diffusers/modular_pipelines/flux2/encoders.py
* a few fix: unpack latents before decoder etc
* style
* remove guidannce to its own block
* style
* flux2-dev work in modular setting
* up
* up up
* add tests
---------
Co-authored-by: yiyi@huggingface.co <yiyi@ip-26-0-160-103.ec2.internal>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Álvaro Somoza <asomoza@users.noreply.github.com>
