Extension setting Default Notebook Language doesn't work

[David Sass]

Describe the bug

The Polyglot-notebook: Default Notebook Language setting on the User level is not being respected.

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

• OS
  • Windows 11
  • Windows 10
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Firefox
  • Safari
• Frontend
  • Jupyter Notebook
  • Jupyter Lab
  • nteract
  • Visual Studio Code
  • Visual Studio Code Insiders
  • Visual Studio
  • Other (please specify)

Screenshots

If applicable, add screenshots to help explain your problem.

Clicking the + code button is not creating a PowerShell block:

[David Sass]

For some reason the metadata of the .ipynb files stay .net C# specific, and I need to edit them, so it would look like this:

"metadata": {
  "kernelspec": {
   "display_name": ".NET (PowerShell)",
   "language": "PowerShell",
   "name": ".net-powershell"
  },
  "language_info": {
   "file_extension": ".ps1",
   "mimetype": "text/x-powershell",
   "name": "PowerShell",
   "pygments_lexer": "powershell",
   "version": "7.4"
  }
 }