Another fixup to item->prop conversion

Author: wtgodbe

src/ProjectTemplates/test/Infrastructure/GenerateTestProps.targets

@@ -14,7 +14,7 @@
 
     <!-- Targeting pack version should be the one we just built, if we're building it. Otherwise we use the baseline version -->
     <PropertyGroup>
-      <MicrosoftAspNetCoreAppRefPackageVersion Condition="'$(IsTargetingPackBuilding)' != 'false'">@(_TargetingPackVersionInfo->'%(PackageVersion)'</MicrosoftAspNetCoreAppRefPackageVersion>
+      <MicrosoftAspNetCoreAppRefPackageVersion Condition="'$(IsTargetingPackBuilding)' != 'false'">@(_TargetingPackVersionInfo->'%(_TargetingPackVersionInfo.PackageVersion)'</MicrosoftAspNetCoreAppRefPackageVersion>
       <MicrosoftAspNetCoreAppRefPackageVersion Condition="'$(IsTargetingPackBuilding)' == 'false'">$(AspNetCoreBaselineVersion)</MicrosoftAspNetCoreAppRefPackageVersion>
     </PropertyGroup>