add rule to add containsTarget=true to labelPolicy navigation

Author: MIchaelMainer

src/Typewriter/MetadataPreprocessor.cs

@@ -53,7 +53,8 @@ internal static string CleanMetadata(string csdlContents)
 
             AddContainsTarget("teamsAppDefinition");
             AddContainsTarget("itemActivity");
-            
+            AddContainsTarget("labelPolicy");
+
             // Intune
             AddContainsTarget("windows81TrustedRootCertificate");
             AddContainsTarget("iosTrustedRootCertificate");