loading dialog fix on save and continue button.

lib/views/pages/user/tasks_request/task_request_form_view.dart

@@ -172,8 +172,9 @@ class _TaskRequestFormState extends State<TaskRequestForm> {
     TaskRequestProvider taskRequestProvider = Provider.of<TaskRequestProvider>(context, listen: false);
     TaskData? taskModel = taskRequestProvider.taskRequestModel;
     taskModel?.statusValue = status;
-    showDialog(context: context, barrierDismissible: false, builder: (context) => const AppLazyLoading());
+
     if (validate(model: taskModel)) {
+      showDialog(context: context, barrierDismissible: false, builder: (context) => const AppLazyLoading());
       List<TaskJobAttachment> attachement = [];
       for (var item in _files) {
         attachement.add(TaskJobAttachment(id: 0, name: ServiceRequestUtils.isLocalUrl(item.path) ? "${item.path.split("/").last}|${base64Encode(item.readAsBytesSync())}" : item.path));