Import Common.props after the Arcade.SDK in props file (#59309)

The Common.props file now depends on the `DotNetBuild` property which isn't available before the Arcade SDK is imported.
Therefore move the import down after the Arcade SDK is imported.
I verified (for every single property defined in Common.props) that it isn't used anywhere in the Arcade.SDK or in aspnetcore before where it's now imported.

Directory.Build.props

@@ -1,5 +1,4 @@
 <Project>
-  <Import Project="eng\Common.props" />
 
   <PropertyGroup>
     <AccelerateBuildsInVisualStudio>true</AccelerateBuildsInVisualStudio>
@@ -98,6 +97,7 @@
   <Import Project="eng\QuarantinedTests.BeforeArcade.props" />
   <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
   <Import Project="eng\QuarantinedTests.AfterArcade.props" />
+  <Import Project="eng\Common.props" />
 
   <PropertyGroup>
     <Product>Microsoft ASP.NET Core</Product>