transformers

304aacac - 🚨🚨🚨 [`Pix2Struct`] Attempts to fix training issues 🚨🚨🚨 (#23004)

🚨🚨🚨 [`Pix2Struct`] Attempts to fix training issues 🚨🚨🚨 (#23004) * multiple fixes - add `add_special_tokens` to `True` by default - remove label smoothing and labels masking * fix test