website broken: Create a new dataset repository, doesn't create a new repo in Firefox
I don't reproduce, I was able to create a new repo: https://huggingface.co/datasets/severo/reproduce-datasets-issues-7108. Can you confirm it's still broken? I have just tried again.

Firefox: The `Create dataset` doesn't work. It has worked in the past. It's my preferred browser.

Chrome: The `Create dataset` works.

It seems to be a Firefox specific issue. I have updated Firefox 129.0 (64 bit), and now the `Create dataset` is working again in Firefox.

UX: It would be nice with better error messages on HuggingFace. maybe an issue with the cookie. cc @Wauplin @coyotte508 
### Describe the bug

This issue is also reported here:
https://discuss.huggingface.co/t/create-a-new-dataset-repository-broken-page/102644

This page is broken.
https://huggingface.co/new-dataset

I fill in the form with my text, and click `Create Dataset`.
![Screenshot 2024-08-16 at 15 55 37](https://github.com/user-attachments/assets/de16627b-7a55-4bcf-9f0b-a48227aabfe6)

Then the form gets wiped. And no repo got created. No error message visible in the developer console.
![Screenshot 2024-08-16 at 15 56 54](https://github.com/user-attachments/assets/0520164b-431c-40a5-9634-11fd62c4f4c3)

# Idea for improvement

For better UX, if the repo cannot be created, then show an error message, that something went wrong.

# Work around, that works for me

```python
from huggingface_hub import HfApi, HfFolder
repo_id = 'simon-arc-solve-fractal-v3'
api = HfApi()
username = api.whoami()['name']
repo_url = api.create_repo(repo_id=repo_id, exist_ok=True, private=True, repo_type="dataset")
```

### Steps to reproduce the bug

Go https://huggingface.co/new-dataset

Fill in the form.

Click `Create dataset`.

Now the form is cleared. And the page doesn't jump anywhere.

### Expected behavior

The moment the user clicks `Create dataset`, the repo gets created and the page jumps to the created repo.


### Environment info

Firefox 128.0.3 (64-bit)
macOS Sonoma 14.5
