Fix llava next tie_word_embeddings config (#30640)
* fix llava next embedding
* add docstring
* Update src/transformers/models/llava_next/configuration_llava_next.py
Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>
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Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>