[train_dreambooth_lora_sdxl] Add --image_interpolation_mode option for image resizing (default to lanczos) #11490
      
        
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related to #11390
This PR adds support for
--image_interpolation_modeintrain_dreambooth_lora_sdxl.py,setting the default to
lanczosfor improved image resizing quality.This is consistent with the changes made in #11206 to other training scripts.
@asomoza