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265b3f4e - Fix callback tensor inputs that are never bound in the denoising loop (#14416)

Fix callback tensor inputs that are never bound in the denoising loop (#14416) Drop callback tensor inputs that are never bound in the denoising loop LEditsPPPipelineStableDiffusion allows prompt_embeds, LEditsPPPipelineStableDiffusionXL allows negative_add_time_ids and StableDiffusionXLControlNetUnionInpaintPipeline allows masked_image_latents, but none of those names exist as locals in the respective __call__, so callback_kwargs[k] = locals()[k] raises KeyError as soon as a user requests them. Add a test_callback_inputs fast test to both LEdits++ test classes, which are plain unittest.TestCase and therefore never ran the PipelineTesterMixin callback tests. Co-authored-by: dg845 <58458699+dg845@users.noreply.github.com>