Execute fail when you has just one distro

[pengchx]

Describe the bug
A clear and concise description of what the bug is.
When one distro, variable distroList seems can not parse success.
Please add terminal output if possible:
Getting distros...
Select distro to move:
1: U
1
Enter WSL target directory:
D:\Ubuntu
Move U to "D:\Ubuntu"? (Y|n): y
Exporting VHDX to "D:\Ubuntu\U.tar" ...
There is no distribution with the supplied name.
Error code: Wsl/Service/WSL_E_DISTRO_NOT_FOUND
D:\Downloads\move-wsl-1.4.0\move-wsl-1.4.0\move-wsl.ps1 : ERROR: Export failed
+ CategoryInfo : NotSpecified: (:) [Write-Error], WriteErrorException
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,move-wsl.ps1

Cleaning up ...

[shinyuta]

I also have this issue (05/23/2024). Yes, installing a second distro fixed the issue.