[Idefics3] Move image features to same device as input embeds (#35100)
* [Idefics3] Move image features to same device as input embeds
* Update src/transformers/models/idefics3/modeling_idefics3.py
* make style
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Co-authored-by: Saif Rehman Nasir <shyshin@github.com>
Co-authored-by: Raushan Turganbay <raushan.turganbay@alumni.nu.edu.kz>
Co-authored-by: Raushan Turganbay <raushan@huggingface.co>