Exercise CreateLightCommandPackageDrop MSBuild task in Arcade Validation

[missymessa]

CreateLightCommandPackageDrop was introduced into the code base during the Post Build Signing project. It's functionality should be exercised in Arcade Valdiation

Related PRs:

• Version light command packages #5473
• Create modified msi package drop #5442
• Rename light command packages to wixpacks #6170

Code that needs testing:

• https://github.com/dotnet/arcade/blob/master/src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/targets/windows/wix.targets