Adding `handle_long_generation` paramters for `text-generation` pipeline. (#14118)
* Adding `handle_long_generation` paramters for `text-generation` pipeline.
* More error handling
* Fixing tests by dropping tf support on this functionality, it needs
`max_new_tokens` to make it possible to understand user's intent.
Otherwise, `max_length` == `tokenizer.model_max_length` <
input_ids.shape[0].
* Fixing doc ?
* Doc ?
* Remove link from doc.
* Catched an issue on roberta.
* Damn doc.
* Non BC proposal ?
* Cleaning the fix ?
* Finally using only a test override.
* Don't need to modify this.
* Bad print.