Invalid Notebooks

The following notebooks are invalid with this error:
> There was an error rendering your Notebook: the 'state' key is missing from 'metadata.widgets'. Add 'state' to each, or remove 'metadata.widgets'.

notebooks/en/search_and_learn.ipynb
notebooks/en/medical_rag_and_Reasoning.ipynb
notebooks/en/fine_tuning_vlm_trl.ipynb

Open notebooks/en/search_and_learn.ipynb, notebooks/en/medical_rag_and_Reasoning.ipynb, and notebooks/en/fine_tuning_vlm_trl.ipynb and inspect each metadata.widgets entry. Ensure every widget has the required state key, or remove metadata.widgets where appropriate; done means the three notebooks render without the reported error.

Written by the indexing model from the issue text.