fix: 修复sql列名出现关键字

backend/src/main/java/io/metersphere/base/mapper/ext/ExtCustomFieldTemplateMapper.xml

@@ -11,7 +11,7 @@
         select
         field_id, template_id, required, default_value, custom_data,
         cft.id as id,
-        cf.name as name, cf.type as type, cf.remark as remark, cf.`system` as system, cf.options as options
+        cf.name as name, cf.type as type, cf.remark as remark, cf.`system` as `system`, cf.options as options
         from custom_field_template cft
         inner join custom_field cf
         on cft.field_id = cf.id