PAG variant for HunyuanDiT, PAG refactor (#8936)
* copy hunyuandit pipeline
* pag variant of hunyuan dit
* add tests
* update docs
* make style
* make fix-copies
* Update src/diffusers/pipelines/pag/pag_utils.py
* remove incorrect copied from
* remove pag hunyuan attn procs to resolve conflicts
* add pag attn procs again
* new implementation for pag_utils
* revert pag changes
* add pag refactor back; update pixart sigma
* update pixart pag tests
* apply suggestions from review
Co-Authored-By: yixu310@gmail.com
* make style
* update docs, fix tests
* fix tests
* fix test_components_function since list not accepted as valid __init__ param
* apply patch to fix broken tests
Co-Authored-By: Sayak Paul <spsayakpaul@gmail.com>
* make style
* fix hunyuan tests
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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
