load_dataset possibly broken for gated datasets?

Describe the bug

When trying to download the winoground dataset, I get this error unless I roll back the version of huggingface-hub:

[/usr/local/lib/python3.7/dist-packages/huggingface_hub/utils/_validators.py](https://localhost:8080/#) in validate_repo_id(repo_id)
    165     if repo_id.count("/") > 1:
    166         raise HFValidationError(
--> 167             "Repo id must be in the form 'repo_name' or 'namespace/repo_name':"
    168             f" '{repo_id}'. Use `repo_type` argument if needed."
    169         )

HFValidationError: Repo id must be in the form 'repo_name' or 'namespace/repo_name': 'datasets/facebook/winoground'. Use `repo_type` argument if needed

Steps to reproduce the bug

Install requirements:

pip install transformers
pip install datasets
# It works if you uncomment the following line, rolling back huggingface hub:
# pip install huggingface-hub==0.10.1

Then:

from datasets import load_dataset
auth_token = ""  # Replace with an auth token, which you can get from your huggingface account: Profile -> Settings -> Access Tokens -> New Token
winoground = load_dataset("facebook/winoground", use_auth_token=auth_token)["test"]

Expected behavior

Downloading of the datset

Environment info

Just a google colab; see here: https://colab.research.google.com/drive/15wwOSte2CjTazdnCWYUm2VPlFbk2NGc0?usp=sharing

[TristanThrush]

Btw, thanks very much for finding the hub rollback temporary fix and bringing the issue to our attention @KhoomeiK!

[TristanThrush]

Awesome, big thanks to both @xiaohk and @mariosasko!