skip fe build in js tests

[pngwn]

Description

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Closes: #(issue)

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Tests

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[gradio-pr-bot]

🪼 branch checks and previews

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

---

Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/3631d3ce012a68b0b94d1bcb053f6de4864c2610/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@3631d3ce012a68b0b94d1bcb053f6de4864c2610#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/3631d3ce012a68b0b94d1bcb053f6de4864c2610/gradio-client-1.6.0.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/3631d3ce012a68b0b94d1bcb053f6de4864c2610/dist/lite.js""></script>

[gradio-pr-bot]

🦄 no changes detected

This Pull Request does not include changes to any packages.

__No changes detected. __

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