[models] respect dtype of the model when instantiating it (#12316)
* [models] respect dtype of the model when instantiating it
* cleanup
* cleanup
* rework to handle non-float dtype
* fix
* switch to fp32 tiny model
* improve
* use dtype.is_floating_point
* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* fix the doc
* recode to use explicit torch_dtype_auto_detect, torch_dtype args
* docs and tweaks
* docs and tweaks
* docs and tweaks
* merge 2 args, add docs
* fix
* fix
* better doc
* better doc
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>