修改进行中乐团插入学生缴费，回调处理

mec-biz/src/main/resources/config/mybatis/ClassGroupMapper.xml

@@ -169,7 +169,7 @@
     <select id="findMixClassChildClassGroup" resultMap="ClassGroup">
         SELECT * FROM class_group WHERE id_ IN
         (SELECT sub_class_group_id_ FROM class_group_relation
-        WHERE class_group_id_ = #{mixClassGroupId}) AND del_flag_ = 0
+        WHERE class_group_id_ = #{mixClassGroupId}) AND group_type_='MUSIC' AND del_flag_ = 0
     </select>
 
     <!-- 根据乐团id获取单技班信息 -->