Fix param table rendering

[aliabd]

What's happening is paramviewer's styling references css variables defined in the gradio theme, which is not on the page. The simplest fix i could think of was to just import the stylesheet from here: https://gradio-hello-world.hf.space/theme.css

I already do that for lite demos on the website. Which is why you'll only see this error when directly navigating to a page without demos or embedded components, for example: https://www.gradio.app/docs/gradio/render

[gradio-pr-bot]

🪼 branch checks and previews

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	Spaces	ready!	Spaces preview
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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/4640c90f680ae60e12b25e425aa45fa78862ac64/gradio-4.38.1-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@4640c90f680ae60e12b25e425aa45fa78862ac64#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-builds.s3.amazonaws.com/4640c90f680ae60e12b25e425aa45fa78862ac64/gradio-client-1.3.0.tgz

[gradio-pr-bot]

🦄 change detected

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Fix param table rendering

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[abidlabs]

Thanks @aliabd! Can confirm that this fixes the issue