Mark BindableBase for inherited discovery and extend the existing MAUI and Uno playgrounds with synthetic nested-model, collection and navigation checks. Keep explicit local NativeAOT validation on the real Microsoft container with matching package versions. No new projects or CI changes; native execution remains unverified.
Migrates the Uno Platform E2E sample application from a multi-project
structure to the recommended single-project architecture.
This update consolidates platform-specific heads into the main
`HelloWorld` project and introduces a new `Playground.Module` to
showcase Prism for Uno.WinUI features like regions, dialogs, and modularity
within the streamlined project setup. It also updates the target framework to .NET 10.