Bring back embedded demos on component docs

[aliabd]

Brings back the embedded component demos on the docs, now with lite and mdsvex.

A few had issues with lite, will figure them out separately: DownloadButton, FileExplorer, LoginButton, LogoutButton, SimpleImage. Potentially I could make just those embedded spaces.

[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

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/a2ff19fc0fb194e7591be8645473fe40468c679c/gradio-4.36.1-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@a2ff19fc0fb194e7591be8645473fe40468c679c#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-builds.s3.amazonaws.com/a2ff19fc0fb194e7591be8645473fe40468c679c/gradio-client-1.1.1.tgz

[gradio-pr-bot]

🦄 change detected

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website	minor

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With the following changelog entry.

Bring back embedded demos on component docs

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