ExtensionLab: #!record throws an exception when trying to serialize a "DirectiveCommand"

[Lawlzee]

Describe the bug

#!record throws an exception when trying to serialize a "DirectiveCommand"

Exemple:

//Cell1
#!csharp
#r "nuget:Microsoft.DotNet.Interactive.ExtensionLab,*-*"

//Cell2
#!csharp
#!record -o E:\record.json
#!time

Which version of .NET Interactive are you using? .NET Interactive © 2020 Microsoft Corporation Version: 1.0.240403+56a0e392fba305af06e72ce7dec885b2b6722c00 Build date: 2021-08-08T14:03:51.0406159Z https://github.com/dotnet/interactive

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

Screenshots