Notifications: Populate IncludeDescendants on ContentPublishedNotification when publishing branch (#20578)

Populate IncludeDescendants on ContentPublishedNotification when publishing branch.

Author: AndyButland

src/Umbraco.Core/Services/ContentService.cs

@@ -2199,7 +2199,7 @@ internal IEnumerable<PublishResult> SaveAndPublishBranch(
                     variesByCulture ? culturesPublished.IsCollectionEmpty() ? null : culturesPublished : ["*"],
                     null,
                     eventMessages));
-            scope.Notifications.Publish(new ContentPublishedNotification(publishedDocuments, eventMessages).WithState(notificationState));
+            scope.Notifications.Publish(new ContentPublishedNotification(publishedDocuments, eventMessages, true).WithState(notificationState));
 
             scope.Complete();
         }