transformers

f2c1df93 - [`generate`] Only warn users if the `generation_config`'s `max_length` is set to the default value (#25030)

[`generate`] Only warn users if the `generation_config`'s `max_length` is set to the default value (#25030) * check max length is default * nit * update warning: no-longer deprecate * comment in the configuration_utils in case max length's default gets changed in the futur