refactor:去掉数据库创建函数root用户限制

backend/src/main/resources/db/migration/V9__chart_view_copy.sql

 DROP FUNCTION IF EXISTS `GET_CHART_VIEW_COPY_NAME`;
 delimiter ;;
-CREATE DEFINER=`root`@`%` FUNCTION `GET_CHART_VIEW_COPY_NAME`(chartId varchar(255)) RETURNS varchar(255) CHARSET utf8
+CREATE FUNCTION `GET_CHART_VIEW_COPY_NAME`(chartId varchar(255)) RETURNS varchar(255) CHARSET utf8
     READS SQL DATA
 BEGIN