Add Flux.2 Klein Image2Image Pipeline

[Bili-Sakura]

Currently, we already support Flux.2 Klein Text2Image Generation, I want to let it support image editing as well.

#12982

[yiyixuxu]

hey @Bili-Sakura
flux2 klein support image input https://github.com/huggingface/diffusers/blob/main/src/diffusers/pipelines/flux2/pipeline_flux2_klein.py#L611

[Bili-Sakura]

hey @Bili-Sakura flux2 klein support image input https://github.com/huggingface/diffusers/blob/main/src/diffusers/pipelines/flux2/pipeline_flux2_klein.py#L611

Got it. But could you refactor with explicit Text2Image and Image2Image pipeline class inherit from that for better readability.

As to my understanding, most T2I model support this sort of I2I by simply replace noise to input image latent which is more likely to an inversion style. However, the image editing model behaves differently.