Notebook 7: Many bundle.js files are loaded while opening a notebook page

Description

There are more than 100 bundle.js files loaded while opening a notebook page

It increases a page loading time when the notebook is opened from the remote machine (not from localhost).

Reproduce

1. Open Network tab in the Browser Dev console
2. Load a notebook page
3. Network tab will show more than 100 requests for loading different bundle.js files

Expected behavior

Bundle js files to reduce a number of requests.

Context

• Operating System and version: MacOS and Linux
• Browser and version: Chrome 122.0.6261.94

• Jupyter Notebook version: 7.1.2

Paste the output from running `jupyter troubleshoot` from the command line here.
You may want to sanitize the paths in the output.

Paste the output from your command line running `jupyter notebook` here, use `--debug` if possible.

Paste the output from your browser Javascript console here, if applicable.

Start by reproducing the issue in Jupyter Notebook 7.1.2 from a remote machine and inspect Chrome's Network tab while opening a notebook page. Identify why more than 100 bundle.js requests are made; done means the required JavaScript is bundled or otherwise loaded with substantially fewer requests and the remote page opens faster.