Fix /monitoring endpoint

[aliabid94]

monitoring URL had been added to the api router instead of app directly, adding gradio_api prefix. Fixed now. Also fixed error if there was no monitoring data to show

Fixes: #10336

[gradio-pr-bot]

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---

Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/cb807a37aeeed9f0bdb92e28c34bda1869359b8c/gradio-5.23.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@cb807a37aeeed9f0bdb92e28c34bda1869359b8c#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/cb807a37aeeed9f0bdb92e28c34bda1869359b8c/gradio-client-1.14.0.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/cb807a37aeeed9f0bdb92e28c34bda1869359b8c/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 /monitoring endpoint

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[abidlabs]

We should add to

gradio/gradio/routes.py

Line 1856 in fb4c3da

INTERNAL_ROUTES = [

?

[abidlabs]

nice lgtm