use the `ROW_IDX_COLUMN` constant name instead of copying the value everywhere
https://github.com/huggingface/dataset-viewer/blob/3e4f278a65c04f239dfb26823493d1fda2800d53/libs/libapi/src/libapi/response.py#L13

See the occurrences:

https://github.com/search?q=repo%3Ahuggingface%2Fdataset-viewer+__hf_index_id&type=code

Maybe  do the same for `__hf_fts_score` too, and move the values to `constants.py`?
use the `ROW_IDX_COLUMN` constant name instead of copying the value everywhere: https://github.com/huggingface/dataset-viewer/blob/3e4f278a65c04f239dfb26823493d1fda2800d53/libs/libapi/src/libapi/response.py#L13

See the occurrences:

https://github.com/search?q=repo%3Ahuggingface%2Fdataset-viewer+__hf_index_id&type=code

Maybe  do the same for `__hf_fts_score` too, and move the values to `constants.py`?