Fix build

src/Avalonia.Build.Tasks/Avalonia.Build.Tasks.csproj

@@ -111,7 +111,7 @@
         <Link>Markup/%(RecursiveDir)%(FileName)%(Extension)</Link>
       </Compile>
       <Compile Include="..\Avalonia.Base\Metadata\NullableAttributes.cs" Link="NullableAttributes.cs" />
-      <Compile Include="..\Shared\TrimmingAttributes.cs" Link="TrimmingAttributes.cs" Visible="False" />
+      <Compile Include="..\Avalonia.Base\Compatibility\TrimmingAttributes.cs" Link="TrimmingAttributes.cs" Visible="False" />
       <Compile Remove="../Markup/Avalonia.Markup.Xaml.Loader\xamlil.github\**\obj\**\*.cs" />
       <Compile Remove="../Markup/Avalonia.Markup.Xaml.Loader\xamlil.github\src\XamlX\IL\SreTypeSystem.cs" />
       <PackageReference Include="Mono.Cecil" Version="0.11.4" />

src/Markup/Avalonia.Markup.Xaml.Loader/Avalonia.Markup.Xaml.Loader.csproj

@@ -13,7 +13,7 @@
   <Import Project="IncludeXamlIlSre.props" />
   <ItemGroup>
     <Compile Include="..\..\Avalonia.Base\Utilities\StringBuilderCache.cs" Link="Utilities\StringBuilderCache.cs" />
-    <Compile Include="..\..\Shared\TrimmingAttributes.cs" Link="TrimmingAttributes.cs" Visible="False" />
+    <Compile Include="..\..\Avalonia.Base\Compatibility\TrimmingAttributes.cs" Link="TrimmingAttributes.cs" Visible="False" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="System.Reflection.Emit" Version="4.3.0" />