Fix the behavior of gr.LoginButton locally and on Spaces

[abidlabs]

Closes: #9650

Also changes the fixes the styling of the gr.LoginButton as it was not showing up correctly

Test here: https://huggingface.co/spaces/abidlabs/login5?logs=build

[gradio-pr-bot]

🪼 branch checks and previews

•	Name	Status	URL
	Spaces	ready!	Spaces preview
	Website	ready!	Website preview
	Storybook	ready!	Storybook preview
🦄	Changes	detected!	Details

---

Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/21a46dd3f0fa4ecb5646cc22eba90439f5cf99c9/gradio-5.1.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@21a46dd3f0fa4ecb5646cc22eba90439f5cf99c9#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/21a46dd3f0fa4ecb5646cc22eba90439f5cf99c9/gradio-client-1.6.0.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/21a46dd3f0fa4ecb5646cc22eba90439f5cf99c9/dist/lite.js""></script>

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/button	patch
gradio	patch

• Maintainers can select this checkbox to manually select packages to update.

With the following changelog entry.

Fix the behavior of gr.LoginButton locally and on Spaces

Maintainers or the PR author can modify the PR title to modify this entry.

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• If the bot has failed to detect any changes, or if this pull request needs to update multiple packages to different versions or requires a more comprehensive changelog entry, maintainers can update the changelog file directly.

[davidberenstein1957]

@abidlabs , does this also cover non-space logins? The login does not seem to work locally either.

[abidlabs]

Hi @davidberenstein1957 yup it will

[abidlabs]

The "huggingface" variant should not change depending on the theme, in order to preserve the Hugging Face branding

[abidlabs]

Should be ready for review, cc @apolinario

[freddyaboulton]

Python changes look good!

Though the white button on dark mode looks off to me

[abidlabs]

Thanks for the review @freddyaboulton, update the style, see screenshots here.

[freddyaboulton]

Thanks for the fix!

[hysts]

LGTM!

[abidlabs]

Thanks @freddyaboulton @hysts @aliabid94 for the review and feedback!

[Wauplin]

Much more robust, thanks @abidlabs for fixing this!