Javascript kernel missing in new C# .dib notebooks

[marckruzik]

Describe the bug

The javascript Kernel does not appear in the list of available kernels.

Steps to reproduce:

• create a new notebook .dib, C#
• save the notebook
• close VS Code
• open notebook with VS Code
• the notebook is open, with one empty C# cell
• try to change the cell kernel
• javascript is absent from the kernel list

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):
Version: 1.0.553001+f0ec3826954ea1ab829b435418328e4aa8db58e2

• 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)

[jonsequitur]

I can repro this and while I dig into it, here's a workaround:

1. Run a cell with the #!javascript magic command.

2. JavaScript nows appears in the cell kernel picker, and is persistent after the notebook is closed and reopened.