[AOT] Clean up AOT build issue in Common.UI

src/common/Common.UI/Common.UI.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <!-- Look at Directory.Build.props in root for common stuff as well -->
   <Import Project="..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\Common.Dotnet.AotCompatibility.props" />
 
   <PropertyGroup>
     <UseWPF>true</UseWPF>

src/common/Common.UI/SettingsDeepLink.cs

@@ -91,20 +91,20 @@ public static void OpenSettings(SettingsWindow window, bool mainExecutableIsOnTh
         {
             try
             {
-                var assemblyPath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
-                var fullPath = new DirectoryInfo(assemblyPath).FullName;
+                var directoryPath = System.AppContext.BaseDirectory;
                 if (mainExecutableIsOnTheParentFolder)
                 {
                     // Need to go into parent folder for PowerToys.exe. Likely a WinUI3 App SDK application.
-                    fullPath = fullPath + "\\..\\PowerToys.exe";
+                    directoryPath = Path.Combine(directoryPath, "..");
+                    directoryPath = Path.Combine(directoryPath, "PowerToys.exe");
                 }
                 else
                 {
                     // PowerToys.exe is in the same path as the application.
-                    fullPath = fullPath + "\\PowerToys.exe";
+                    directoryPath = Path.Combine(directoryPath, "PowerToys.exe");
                 }
 
-                Process.Start(new ProcessStartInfo(fullPath) { Arguments = "--open-settings=" + SettingsWindowNameToString(window) });
+                Process.Start(new ProcessStartInfo(directoryPath) { Arguments = "--open-settings=" + SettingsWindowNameToString(window) });
             }
             catch
             {

src/common/Common.UI/ThemeManager.cs

@@ -11,7 +11,7 @@
 
 namespace Common.UI
 {
-    public class ThemeManager : IDisposable
+    public partial class ThemeManager : IDisposable
     {
         private readonly Application _app;
         private const string LightTheme = "Light.Accent1";