Rendered pages do not rewrite relative URLs in jupyter-config-data

[bollwyvl]

thanks for voici!

Description

Extensions that rely on *Url and *Urls config settings are incorrect when loaded in rendered voici_core pages.

Reproduce

• make a lite site with an extension that uses site-relative paths, e.g. jupyterlite-pyodide-kernel's pyodideUrl
• try to do something that uses that URL (like start a kernel)
• see 404s

Uncaught (in promise) NetworkError: Failed to execute 'importScripts' on 'WorkerGlobalScope': 
  The script at 'http://127.0.0.1:8000/voici/render/static/pyodide/pyodide.js' failed to load.
    at gt.initRuntime (352.3014c3141745cb055fab.js?v=3014c3141745cb055fab:2:105293)
    at gt.initialize (352.3014c3141745cb055fab.js?v=3014c3141745cb055fab:2:104999)
    at a (352.3014c3141745cb055fab.js?v=3014c3141745cb055fab:2:101679)

In the above page, the baseUrl is correctly set in jupyter-config-data to ../../, but ./static/pyodide/pyodide.js (instead of "../../static/pyodide/pyodide.js") is being requested.

Expected behavior

The path normalization applied by config-utils.js handles this for the general case, including merging site-level customizations, etc. Just "not doing it" means it is likely a number of other things that rely on relative paths during a deployment will break.

Context

• voila version: n/a
• Operating System and version: ubuntu linux 24.04
• Browser and version: all

Troubleshoot Output

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

Command Line Output

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

Browser Output

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[Justyouraveragehomie]

Any updates to this?