update: FluxKontextInpaintPipeline support (#11820)
* update: FluxKontextInpaintPipeline support
* fix: Refactor code, remove mask_image_latents and ruff check
* feat: Add test case and fix with pytest
* Apply style fixes
* copies
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Co-authored-by: YiYi Xu <yixu310@gmail.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>