Let inputs of fast tokenizers be tuples as well as lists (#19898)
* Let inputs of fast tokenizers be tuples as well as lists
* Update src/transformers/tokenization_utils_fast.py
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>
* Style
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>