Enabled AoT for WinAppSdk 1.6-experimental1. Added RuntimeIdentifier to head, removed redundant RuntimeIdentifiers definition on libraries.

Author: Arlodotexe

MultiTarget/WinUI.Extra.props

@@ -26,7 +26,7 @@
 
     <RuntimeIdentifiers Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) >= 8">win-x86;win-x64;win-arm64</RuntimeIdentifiers> 
     <RuntimeIdentifiers Condition="8 > $([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)'))">win10-x86;win10-x64;win10-arm64</RuntimeIdentifiers>
-    <RuntimeIdentifiers>win-x86;win-x64;win-arm64</RuntimeIdentifiers>
+    <WindowsSdkPackageVersion>10.0.22621.35-preview</WindowsSdkPackageVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(IsUno)' == 'true'">

ProjectHeads/Head.WinAppSdk.props

@@ -15,8 +15,9 @@
   <Import Project="$(MSBuildThisFileDirectory)\..\MultiTarget\WinUI.Extra.props" />
 
   <PropertyGroup Condition="'$(Configuration)' == 'Release'">
-      <!-- Set to true when WinAppSdk releases AoT support in 1.6+ -->
-      <PublishAot>false</PublishAot>
+      <PublishAot>true</PublishAot>
+      <RuntimeIdentifier Condition="$([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)')) >= 8">win-$(Platform)</RuntimeIdentifier> 
+      <RuntimeIdentifier Condition="8 > $([MSBuild]::GetTargetFrameworkVersion('$(TargetFramework)'))">win10-$(Platform)</RuntimeIdentifier>
   </PropertyGroup>
 
   <ItemGroup>