Trigger click event from gr.DownloadButton even when no file is present

[abidlabs]

Very quick fix: #7860

[gradio-pr-bot]

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/31621a7d5c2279fca82c974ddf779f1b3f8b68f6/gradio-4.23.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@31621a7d5c2279fca82c974ddf779f1b3f8b68f6#subdirectory=client/python"

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/downloadbutton	patch
gradio	patch

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

With the following changelog entry.

Trigger click event from gr.DownloadButton even when no file is present

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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.

[abidlabs]

Thanks @freddyaboulton for the ⚡ review!