Enabled NoWarn suppression on non-WinUI UWP

Author: Arlodotexe

MultiTarget/Library.props

@@ -16,6 +16,7 @@
   <!-- Enable project identifiers -->
   <Import Project="$(ToolingDirectory)\MultiTarget\MultiTargetIdentifiers.props" />
   <Import Project="$(ToolingDirectory)\MultiTarget\DefinedConstants.props" />
+  <Import Project="$(ToolingDirectory)\MultiTarget\NoWarn.props"/>
 
   <!-- Add platform package dependencies -->
   <Import Project="$(ToolingDirectory)\MultiTarget\PackageReferences\Uno.props" Condition="$(IsUno) == 'true'" />

MultiTarget/NoWarn.props

@@ -0,0 +1,6 @@
+<Project>  
+  <!-- Disable warnings for 'This call site is reachable on all platforms.' caused by underlying platform. -->
+  <PropertyGroup Condition="'$(IsUwp)' == 'true' AND $([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">
+    <NoWarn>$(NoWarn);CA1416;</NoWarn>
+  </PropertyGroup>
+</Project>