refactor(common): 修改TicketDTO中throughput字段类型

- 移除BigDecimal类型导入
- 将throughput字段类型从BigDecimal改为String
- 更新相关代码适配字段类型变更

nflg-mobilebroken-common/src/main/java/com/nflg/mobilebroken/common/pojo/dto/TicketDTO.java

@@ -2,7 +2,6 @@ package com.nflg.mobilebroken.common.pojo.dto;
 
 import lombok.Data;
 
-import java.math.BigDecimal;
 import java.time.LocalDateTime;
 
 @Data
@@ -153,5 +152,5 @@ public class TicketDTO {
     /**
      * 产量
      */
-    private BigDecimal throughput;
+    private String throughput;
 }