Relates to bud U4-1142 Umbraco helper in wrong context with used in a Partial.

Fix to context of Umbraco helper when used in partials.

src/Umbraco.Web/UmbracoHelper.cs

@@ -251,6 +251,7 @@ namespace Umbraco.Web
 
 			var item = new Item()
 				{
+                    NodeId = currentPage.Id.ToString(),
 					Field = fieldAlias,
 					TextIfEmpty = altText,
 					LegacyAttributes = attributesForItem