Adds .expand() and .collapse() events to gr.Accordion

[abidlabs]

This PR was produced via programmatic use of aider + a lot of human intervention. More details available internally

Test with:

import gradio as gr

with gr.Blocks() as demo:
    with gr.Accordion("See Details") as accordion:
        gr.Markdown("lorem ipsum")

    t = gr.Textbox()

    accordion.expand(lambda: "Accordion is expanded", None, t)
    accordion.collapse(lambda: "Accordion is collapsed", None, t)

if __name__ == "__main__":
    demo.launch()

Closes: #5197

[gradio-pr-bot]

🪼 branch checks and previews

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---

Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/aeed53be37d1fe1caac03e4c5b3e05efbeaf28c7/gradio-5.4.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@aeed53be37d1fe1caac03e4c5b3e05efbeaf28c7#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/aeed53be37d1fe1caac03e4c5b3e05efbeaf28c7/gradio-client-1.7.1.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/aeed53be37d1fe1caac03e4c5b3e05efbeaf28c7/dist/lite.js""></script>

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/accordion	minor
gradio	minor

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With the following changelog entry.

Adds .expand() and .collapse() events to gr.Accordion

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[abidlabs]

If there are any minor changes that need to be made, anyone should feel free to push to this branch. Thanks!

[freddyaboulton]

Should we expect that changing the open prop from python triggers the collapse or expand event? Otherwise LGTM!

[freddyaboulton]

Ok since the issue specifically calls out the Button, then it makes sense for expand/collapse to only trigger on user input.

[abidlabs]

Thanks for merging this in @freddyaboulton!