🐛 Fix self contained app locating MSBuild

DotNetSolutionTools.App/Views/MainWindow.axaml.cs

@@ -1,6 +1,5 @@
 using Avalonia.Controls;
-using Avalonia.Interactivity;
-using DotNetSolutionTools.App.ViewModels;
+using Microsoft.Build.Locator;
 
 namespace DotNetSolutionTools.App.Views;
 
@@ -8,6 +7,11 @@ public partial class MainWindow : Window
 {
     public MainWindow()
     {
+        var instance = MSBuildLocator
+            .QueryVisualStudioInstances()
+            .OrderByDescending(instance => instance.Version)
+            .First();
+        MSBuildLocator.RegisterInstance(instance);
         InitializeComponent();
     }
 }