Safer `HuggingFaceDatasetSaver` (and deprecate `HuggingFaceDatasetJsonSaver`) (#3973)
* Draft for a safer HuggingFaceDatasetSaver
* Rename (and replace) gr.SaferHuggingFaceDatasetSaver as gr.HuggingFaceDatasetSaver
* update changelog
* ruff
* doc
* tmp work
* merge 2 classes
* remove useless code
* adapt tests
* Update gradio/flagging.py
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
* Update CHANGELOG.md
* fix typing
* code formatting
* removed print from tests
* removing imports
* removing imports
* fix paths
* formatting
* wording
* formating
* fix tests
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Co-authored-by: testbot <lucainp@hf.co>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>