Use updated `model_max_length` when saving tokenizers (#20401)
Use updated `model_max_length` when saving tokenizers (#20401)

* Use updated values

Co-authored-by: ydshieh <b8b5afdcc4de58b54ce28738b50f86ec989da691@users.noreply.github.com>
huggingface/transformers,huggingface/transformers,huggingface/transformers,huggingface/transformers