Enable estimate info (size) on all datasets
TODO before merging:

- [x] merge https://github.com/huggingface/dataset-viewer/pull/2932
- [x] test json in prod (allenai/c4 en.noblocklist: correct relative error of only 0.02%)
- [x] test webdataset in prod (datasets-maintainers/small-publaynet-wds-10x: correct with relative error of only 0.07%)
Enable estimate info (size) on all datasets: TODO before merging:

- [x] merge https://github.com/huggingface/dataset-viewer/pull/2932
- [x] test json in prod (allenai/c4 en.noblocklist: correct relative error of only 0.02%)
- [x] test webdataset in prod (datasets-maintainers/small-publaynet-wds-10x: correct with relative error of only 0.07%)