fix(mapper): 更新用户通知授权检查逻辑

- 将XML中的小于等于符号从<=更正为&lt;=
- 确保SQL语句在XML文件中正确转义
- 避免因特殊字符导致的解析错误

src/main/resources/mapper/UserNotificationAuthorizationMapper.xml

@@ -85,7 +85,7 @@
             update_time = NOW()
         WHERE id = #{id}
           AND status = 1
-          AND consumed_count + #{count} <= authorization_count
+          AND consumed_count + #{count} &lt;= authorization_count
     </update>
     
     <!-- 检查用户是否还有剩余授权次数 -->