First suggested kernel is always C#

[roblourens]

• Reload the window
• Run "Create jupyter notebook"
• The automatically selected kernel is C#
• Close the editor
• Run the create command again
• It picks a more reasonable python virtual environment kernel

I see that no kernels are marked as suggested, so we take the first available kernel. I didn't debug that far, so I didn't see - is the issue with the extension not marking the kernel as suggested? Is it an issue with vscode not waiting for this to happen?

cc @rebornix

[greazer]

This is a dupe of #10591