.NET 8: dotnet --info displays "There are no installed workloads to display" while displaying installed workloads

[bradwilson]

Description

Running dotnet --info with .NET 8 installed shows this confusing message:

.NET workloads installed:
 Workload version: 8.0.100-manifests.71b9f198
There are no installed workloads to display.

It would appear that the logic to determine whether to display the "no installed workloads" message is incorrect.

[baronfel]

This is a side effect of making the SDK support side-by-side workloads. You have no workloads installed, but the SDK has some knowledge of what workloads are available and that piece of data is what's being reported here. We can probably take a pass at making this more clear as we plumb support for workloads sets more generally through the SDK in #35455.