Update MailingEdit to handle templates and save logic

- Added `setupData.templates` to the useEffect dependencies.

Surge365.MassEmailReact.Web/src/components/modals/MailingEdit.tsx

@@ -166,7 +166,8 @@ const MailingEdit = ({ open, mailing, onClose, onSave }: MailingEditProps) => {
                 setCurrentTarget(null);
             }
         }
-    }, [open, mailing, reset, setupData.testEmailLists, setupData.targets]);
+    }, [open, mailing, reset, setupData.testEmailLists, setupData.targets, setupData.templates]);
+
     const handleSave = async (formData: Mailing) => {
         const apiUrl = isNew ? "/api/mailings" : `/api/mailings/${formData.id}`;
         const method = isNew ? "POST" : "PUT";