CI worker test_polars_struct_thread_panic_error is broken
NOW:
CI worker test `test_polars_struct_thread_panic_error` raises `RepositoryNotFoundError`: https://github.com/huggingface/dataset-viewer/actions/runs/11053126786/job/30706767804?pr=3037
```
ERROR tests/job_runners/split/test_descriptive_statistics.py::test_polars_struct_thread_panic_error - huggingface_hub.utils._errors.RepositoryNotFoundError: 404 Client Error. (Request ID: Root=1-66f560ea-0d3bd15934a45d7838ac6bb3;f1b1e4ce-2768-4f41-a5d8-f1c1c129addc)

Repository Not Found for url: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error/resolve/main/test_polars_panic_error.parquet.
Please make sure you specified the correct `repo_id` and `repo_type`.
If you are trying to access a private or gated repo, make sure you are authenticated.
```

Direct cause is that the dataset has been deleted from the CI Hub: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error

BEFORE:
~~CI worker test `test_polars_struct_thread_panic_error` raises `LocalEntryNotFoundError`: https://github.com/huggingface/dataset-viewer/actions/runs/11052280214/job/30704011957~~
```
ERROR tests/job_runners/split/test_descriptive_statistics.py::test_polars_struct_thread_panic_error - huggingface_hub.utils._errors.LocalEntryNotFoundError: An error happened while trying to locate the file on the Hub and we cannot find the requested files in the local cache. Please check your connection and try again or make sure your Internet connection is on.
```

~~Direct cause is a 500 server error:~~
```
E           huggingface_hub.utils._errors.HfHubHTTPError: 500 Server Error: Internal Server Error for url: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error/resolve/main/test_polars_panic_error.parquet (Request ID: Root=1-66f555d0-2480d6c65b27b8e7047e6f9c;093b5eeb-e881-4c93-bafd-12965f704b66)
E           
E           Cannot read properties of undefined (reading 'cloudfront') (internal error hidden in production)
```
CI worker test_polars_struct_thread_panic_error is broken: NOW:
CI worker test `test_polars_struct_thread_panic_error` raises `RepositoryNotFoundError`: https://github.com/huggingface/dataset-viewer/actions/runs/11053126786/job/30706767804?pr=3037
```
ERROR tests/job_runners/split/test_descriptive_statistics.py::test_polars_struct_thread_panic_error - huggingface_hub.utils._errors.RepositoryNotFoundError: 404 Client Error. (Request ID: Root=1-66f560ea-0d3bd15934a45d7838ac6bb3;f1b1e4ce-2768-4f41-a5d8-f1c1c129addc)

Repository Not Found for url: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error/resolve/main/test_polars_panic_error.parquet.
Please make sure you specified the correct `repo_id` and `repo_type`.
If you are trying to access a private or gated repo, make sure you are authenticated.
```

Direct cause is that the dataset has been deleted from the CI Hub: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error

BEFORE:
~~CI worker test `test_polars_struct_thread_panic_error` raises `LocalEntryNotFoundError`: https://github.com/huggingface/dataset-viewer/actions/runs/11052280214/job/30704011957~~
```
ERROR tests/job_runners/split/test_descriptive_statistics.py::test_polars_struct_thread_panic_error - huggingface_hub.utils._errors.LocalEntryNotFoundError: An error happened while trying to locate the file on the Hub and we cannot find the requested files in the local cache. Please check your connection and try again or make sure your Internet connection is on.
```

~~Direct cause is a 500 server error:~~
```
E           huggingface_hub.utils._errors.HfHubHTTPError: 500 Server Error: Internal Server Error for url: https://hub-ci.huggingface.co/datasets/__DUMMY_TRANSFORMERS_USER__/test_polars_panic_error/resolve/main/test_polars_panic_error.parquet (Request ID: Root=1-66f555d0-2480d6c65b27b8e7047e6f9c;093b5eeb-e881-4c93-bafd-12965f704b66)
E           
E           Cannot read properties of undefined (reading 'cloudfront') (internal error hidden in production)
```