Commented out the masking related code because it is never used in this implementation.
* PixArt initial version * PixArt Diffusers convert logic * pos_emb and interpolation logic * Reduce duplicate code * Formatting * Use optimized attention * Edit empty token logic * Basic PixArt LoRA support * Fix aspect ratio logic * PixArtAlpha text encode with conds * Use same detection key logic for PixArt diffusers