fix: flyway兼容

backend/src/main/resources/db/migration/V16__update_chart_filter.sql

+UPDATE `chart_view` SET `custom_filter` = '[]';
\ No newline at end of file

backend/src/main/resources/db/migration/V16__alter_chart_view.sql → backend/src/main/resources/db/migration/V17__alter_chart_view.sql

 ALTER TABLE `chart_view` ADD COLUMN `ext_stack` LONGTEXT COMMENT '堆叠项' AFTER `y_axis`;
 
 UPDATE `chart_view` SET `ext_stack` = '[]';
-UPDATE `chart_view` SET `custom_filter` = '[]';
\ No newline at end of file