transformers

a8c3f9aa - Warning about too long input for fast tokenizers too (#8799)

Warning about too long input for fast tokenizers too (#8799) * Warning about too long input for fast tokenizers too If truncation is not set in tokenizers, but the tokenization is too long for the model (`model_max_length`), we used to trigger a warning that The input would probably fail (which it most likely will). This PR re-enables the warning for fast tokenizers too and uses common code for the trigger to make sure it's consistent across. * Checking for pair of inputs too. * Making the function private and adding it's doc. * Remove formatting ?? in odd place. * Missed uppercase.