feature: Disable ReactiveUI platform registrations

build/ReactiveUI.props

@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="12.1.1" />
+    <PackageReference Include="ReactiveUI" Version="13.2.10" />
   </ItemGroup>
 </Project>

src/Avalonia.ReactiveUI/AppBuilderExtensions.cs

@@ -17,6 +17,8 @@ namespace Avalonia.ReactiveUI
         {
             return builder.AfterPlatformServicesSetup(_ =>
             {
+                PlatformRegistrationManager.SetRegistrationNamespaces(RegistrationNamespace.Avalonia);
+                Locator.CurrentMutable.InitializeReactiveUI();
                 RxApp.MainThreadScheduler = AvaloniaScheduler.Instance;
                 Locator.CurrentMutable.RegisterConstant(new AvaloniaActivationForViewFetcher(), typeof(IActivationForViewFetcher));
                 Locator.CurrentMutable.RegisterConstant(new AutoDataTemplateBindingHook(), typeof(IPropertyBindingHook));