Fix complement data date order will change due to use set (#13487)

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

@@ -1274,9 +1274,8 @@ public class ExecutorServiceImpl extends BaseServiceImpl implements ExecutorServ
      */
     private String removeDuplicates(String scheduleTimeList) {
         if (StringUtils.isNotEmpty(scheduleTimeList)) {
-            Set<String> dateSet =
+            return Arrays.stream(scheduleTimeList.split(COMMA)).map(String::trim).distinct()
-                    Arrays.stream(scheduleTimeList.split(COMMA)).map(String::trim).collect(Collectors.toSet());
+                    .collect(Collectors.joining(COMMA));
-            return String.join(COMMA, dateSet);
         }
         return null;
     }