fix: 解决多人或签、会签审批taskNode没有赋值问题

jyjz-system/jyjz-system-oa/src/main/java/cn/jyjz/flowable/service/impl/FlowTaskServiceImpl.java

@@ -558,10 +558,10 @@ public class FlowTaskServiceImpl extends FlowServiceFactory implements IFlowTask
                 childPicture.setTaskId(String.join(",", taskIds));
                 childPicture.setTaskname(String.join(",", taskNames));
             } else {
-                taskData = taskList.get(0);
                 childPicture.setTaskId(taskData.getId());
                 childPicture.setTaskname(taskData.getName());
             }
+            taskData = taskList.get(0);
         }
         if (ObjectUtils.isEmpty(taskData)) {
             model.setFinishtime(System.currentTimeMillis());