[Fix-11583][UI] Fix the API usage of gantt graph (#13778)

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/ProcessInstanceServiceImpl.java

@@ -993,7 +993,7 @@ public class ProcessInstanceServiceImpl extends BaseServiceImpl implements Proce
                 task.getEndDate().add(endTime.getTime());
                 task.setIsoStart(startTime);
                 task.setIsoEnd(endTime);
-                task.setStatus(taskInstance.getState().getDesc().toUpperCase());
+                task.setStatus(taskInstance.getState().name());
                 task.setExecutionDate(taskInstance.getStartTime());
                 task.setDuration(DateUtils.format2Readable(endTime.getTime() - startTime.getTime()));
                 taskList.add(task);