Tokenizer model_max_length

Hello,

I was seeing warning during finetuning Mistral and tracked this line here

https://github.com/huggingface/alignment-handbook/blob/main/src/alignment/model_utils.py#L71

Because Mistral's tokenizer model max length has a large number so the model_max_length set as 2048. However my training data consists sequence length longer than that, e.g. 4000 characters. Would this be a problem?

Thank you!