Modalities not detected for some datasets using the Webdatasets format
I have found 2 examples of the modality detection code failing to recognize modalities in text and image datasets using the Webdataset format:


* https://huggingface.co/datasets/ProGamerGov/synthetic-dataset-1m-dalle3-high-quality-captions

* https://huggingface.co/datasets/CaptionEmporium/midjourney-niji-1m-llavanext


I'm not sure where in the modality detection code that things are failing: https://github.com/huggingface/dataset-viewer/blob/main/services/worker/src/worker/job_runners/dataset/modalities.py
Modalities not detected for some datasets using the Webdatasets format: I have found 2 examples of the modality detection code failing to recognize modalities in text and image datasets using the Webdataset format:


* https://huggingface.co/datasets/ProGamerGov/synthetic-dataset-1m-dalle3-high-quality-captions

* https://huggingface.co/datasets/CaptionEmporium/midjourney-niji-1m-llavanext


I'm not sure where in the modality detection code that things are failing: https://github.com/huggingface/dataset-viewer/blob/main/services/worker/src/worker/job_runners/dataset/modalities.py