Merge pull request #257 from CommunityToolkit/user/sergiopedri/winui-2.8.7

Update WinUI 2 to 2.8.7 stable

Author: Sergio0694

MultiTarget/PackageReferences/Uwp/Microsoft.UI.Xaml.props

@@ -1,15 +1,9 @@
 <Project>
 	<!-- Condition must be on a <When> statement in its own file for this to work in Visual Studio. https://stackoverflow.com/a/16557059 -->
 	<Choose>
-		<When Condition="'$(HasWinUI)' == 'true' AND '$(MultiTargetPlatformIdentifier)' != 'windows'" >
+		<When Condition="'$(HasWinUI)' == 'true'" >
 			<ItemGroup>
-				<PackageReference Include="Microsoft.UI.Xaml" Version="2.8.6" />
-			</ItemGroup>
-		</When>
-		<When Condition="'$(HasWinUI)' == 'true' AND '$(MultiTargetPlatformIdentifier)' == 'windows'" >
-			<ItemGroup>
-				<!-- Prerelease version needed for TargetFramework support. Not needed by uap. -->
-				<PackageReference Include="Microsoft.UI.Xaml" Version="2.8.7-prerelease.241119001" />
+				<PackageReference Include="Microsoft.UI.Xaml" Version="2.8.7" />
 			</ItemGroup>
 		</When>
 		<Otherwise>