Repository: huggingface/transformers
Pull request: Use correct `model_input_names` for PixtralImageProcessor

# What does this PR do?

Returned tensors from the PixtralProcessor does not match the list in `model_input_names` (useful for inferring expected tensor keys).

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Changed files:
filename: src/transformers/models/pixtral/image_processing_pixtral.py
patch: @@ -170,7 +170,7 @@ class PixtralImageProcessor(BaseImageProcessor):
             Whether to convert the image to RGB.
     """
 
-    model_input_names = ["pixel_values"]
+    model_input_names = ["pixel_values", "image_sizes"]
 
     def __init__(
         self,

filename: src/transformers/models/pixtral/image_processing_pixtral_fast.py
patch: @@ -75,6 +75,8 @@ class PixtralImageProcessorFast(BaseImageProcessorFast):
     do_convert_rgb = True
     valid_kwargs = PixtralFastImageProcessorKwargs
 
+    model_input_names = ["pixel_values", "image_sizes"]
+
     def __init__(self, **kwargs: Unpack[PixtralFastImageProcessorKwargs]):
         super().__init__(**kwargs)