JSON settings editor does not reflect overrides.json state

[MordorianGuy]

Description

overrides.json overrides settings just partially. For unknown reasons, some settings are visible in JSON Settings Editor & enabled, some are invisible but enabled too, & some are both invisible & disabled.

Disabled & invisible:

Enabled & invisible:

Enabled & visible:

By the way, settings that work are visible in usual settings editor:

overrides.json:

{
  "@jupyterlab/apputils-extension:notification": {
    "fetchNews": false
  },
  "@jupyterlab/apputils-extension:theme": {
    "overrides": {
      "code-font-family": "Fira Code"
    }
  },
  "@jupyterlab/completer-extension:inline-completer": {
    "providers": {
      "@jupyterlab/inline-completer:history": {
        "enabled": true,
        "timeout": 5000,
        "debouncerDelay": 0,
        "maxSuggestions": 100
      }
    }
  }
}

Reproduce

1. Install Jupyter Lab 4.2.0 on Ubuntu, for example, with mamba or conda: mamba create -n jupyter_lab "jupyterlab==4.2.0".
2. Copy overrides.json to <env_path>/share/jupyter/lab/settings/.
3. Run Jupyter Lab jupyter lab --no-browser --ip=0.0.0.0.
4. Connect with a browser to localhost:8888.
5. Tap Ctrl+, & click JSON Settings Editor.
6. Misunderstand what is happening.

Expected behavior

I copy overrides.json, run Jupyter Lab, all settings are visible in JSON Editor & work.

Context

• Operating System and version: Ubuntu 22.04.2 LTS
• Browser and version: FIrefox Windows MSIX 125.0.3
• JupyterLab version: 4.2.0

Troubleshoot Output

https://pastebin.com/fc3ViEyM
Password: `2e3rTEGigU`

Command Line Output

Password: `icay4bSBWM`
https://pastebin.com/pXjD43Pe

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