Fixed: Restore service sendNotification

The service function had been moved to private, that break the service engine invocation. Restore it to public and synchronise the freemarker template creation with adding delegator and dispatcher to fix the url rendering system that need delegator

framework/common/src/main/java/org/apache/ofbiz/common/email/NotificationServices.java

@@ -118,7 +118,7 @@ public class NotificationServices {
      * the sevice
      * @return A Map with the service response messages in it
      */
-    private static Map<String, Object> sendNotification(DispatchContext ctx, Map<String, ? extends Object> context) {
+    public static Map<String, Object> sendNotification(DispatchContext ctx, Map<String, ? extends Object> context) {
         LocalDispatcher dispatcher = ctx.getDispatcher();
         Locale locale = (Locale) context.get("locale");
         Map<String, Object> result = null;
@@ -193,6 +193,8 @@ private static Map<String, Object> prepareNotification(DispatchContext ctx, Map<
         if (templateData == null) {
             templateData = new LinkedHashMap<>();
         }
+        templateData.put("delegator", delegator);
+        templateData.put("dispatcher", ctx.getDispatcher());
 
         try {
             // ensure the baseURl is defined