Update WinAppSDK (#6940)

Author: Youssef1313

Directory.Packages.props

@@ -59,7 +59,7 @@
     <PackageVersion Include="Microsoft.TestPlatform.ObjectModel" Version="$(MicrosoftNETTestSdkVersion)" />
     <PackageVersion Include="Microsoft.TestPlatform.TranslationLayer" Version="$(MicrosoftNETTestSdkVersion)" />
     <PackageVersion Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="1.6.240923002" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="1.8.251003001" />
     <PackageVersion Include="Polyfill" Version="9.0.0-beta.19" />
     <PackageVersion Include="System.Threading.Tasks.Extensions" Version="$(SystemThreadingTasksExtensionsVersion)" />
   </ItemGroup>