fix(mapper): 修改SQL查询逻辑以优化公司名称显示

- 将COALESCE函数替换为直接使用关联表的match_name字段
- 移除对原表company_name字段的回退逻辑
- 统一四个映射文件中的SQL查询结构
- 确保所有关联查询都使用一致的字段映射方式

src/main/java/com/gxwebsoft/credit/mapper/xml/CreditBranchMapper.xml

@@ -4,7 +4,7 @@
 
     <!-- 关联查询sql -->
     <sql id="selectSql">
-        SELECT a.*, COALESCE(match_name, a.company_name) AS companyName, u.real_name AS realName
+        SELECT a.*, b.match_name AS companyName, u.real_name AS realName
         FROM credit_branch a
         LEFT JOIN credit_company b ON a.company_id = b.id
         LEFT JOIN gxwebsoft_core.sys_user u ON a.user_id = u.user_id

src/main/java/com/gxwebsoft/credit/mapper/xml/CreditHistoricalLegalPersonMapper.xml

@@ -4,7 +4,7 @@
 
     <!-- 关联查询sql -->
     <sql id="selectSql">
-        SELECT a.*, COALESCE(match_name, a.company_name) AS companyName, u.real_name AS realName
+        SELECT a.*, b.match_name AS companyName, u.real_name AS realName
         FROM credit_historical_legal_person a
         LEFT JOIN credit_company b ON a.company_id = b.id
         LEFT JOIN gxwebsoft_core.sys_user u ON a.user_id = u.user_id

src/main/java/com/gxwebsoft/credit/mapper/xml/CreditNearbyCompanyMapper.xml

@@ -4,7 +4,7 @@
 
     <!-- 关联查询sql -->
     <sql id="selectSql">
-        SELECT a.*, COALESCE(match_name, a.company_name) AS companyName, u.real_name AS realName
+        SELECT a.*, b.match_name AS companyName, u.real_name AS realName
         FROM credit_nearby_company a
         LEFT JOIN credit_company b ON a.company_id = b.id
         LEFT JOIN gxwebsoft_core.sys_user u ON a.user_id = u.user_id

src/main/java/com/gxwebsoft/credit/mapper/xml/CreditSuspectedRelationshipMapper.xml

@@ -4,7 +4,7 @@
 
     <!-- 关联查询sql -->
     <sql id="selectSql">
-        SELECT a.*, COALESCE(match_name, a.company_name) AS companyName, u.real_name AS realName
+        SELECT a.*, b.match_name AS companyName, u.real_name AS realName
         FROM credit_suspected_relationship a
         LEFT JOIN credit_company b ON a.company_id = b.id
         LEFT JOIN gxwebsoft_core.sys_user u ON a.user_id = u.user_id