Netcore: dotnet new template updates and change HideTopLevelNodeFromPath default value to true (#10222)

* As we always ship with config in V8 to set this to be true makes sense it now because default in code

* Explicitly add JSON Schema property incase user IDE does not automap it

* Escaping issue with example usages

src/Umbraco.Core/Configuration/Models/GlobalSettings.cs

@@ -39,7 +39,7 @@ namespace Umbraco.Cms.Core.Configuration.Models
         /// <summary>
         /// Gets or sets a value indicating whether to hide the top level node from the path.
         /// </summary>
-        public bool HideTopLevelNodeFromPath { get; set; } = false;
+        public bool HideTopLevelNodeFromPath { get; set; } = true;
 
         /// <summary>
         /// Gets or sets a value indicating whether HTTPS should be used.