Fix ssr_mode parameter name in notice message

[oxkitsune]

Description

Fixes the SSR notice message to correctly reference the ssr_mode parameter instead of ssr so users know the right parameter to use when disabling SSR.

[freddyaboulton]

Thanks @oxkitsune !

[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/8f3e1ef8bfdc552330d676fd8091db161944f24f/gradio-5.25.1-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@8f3e1ef8bfdc552330d676fd8091db161944f24f#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/8f3e1ef8bfdc552330d676fd8091db161944f24f/gradio-client-1.14.2.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/8f3e1ef8bfdc552330d676fd8091db161944f24f/dist/lite.js""></script>

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
gradio	patch

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Fix ssr_mode parameter name in notice message

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