Allow Dashboard to roll-forward #5445
Description
The Aspire Dashboard currently ships as a NuGet package, which contains it as a framework-dependent application. This application targets net8.0 and doesn't allow roll-forward, which means that if 9.0 SDK users don't have 8.0 runtime installed they will fail to launch the dashboard. To fix this, we need to change the dashboard so that we allow roll-forward, which would then help 9.0 users be able to launch the dashboard.