feat(credit): 添加当事人信息字段到债务人实体

- 设置plaintiffAppellant字段值
- 设置appellee字段值
- 设置otherPartiesThirdParty字段值
- 支持上游XLS模板中的当事人姓名兼容性处理

src/main/java/com/gxwebsoft/credit/controller/CreditJudgmentDebtorController.java

@@ -338,6 +338,9 @@ public class CreditJudgmentDebtorController extends BaseController {
         if (debtorName != null) {
             debtorName = debtorName.trim();
         }
+        entity.setPlaintiffAppellant(param.getPlaintiffAppellant());
+        entity.setAppellee(param.getAppellee());
+        entity.setOtherPartiesThirdParty(param.getOtherPartiesThirdParty());
         // Some upstream XLS templates store party/company name in "原告/上诉人/被告/第三人" columns.
         // When present, use them to populate the debtor "name" for compatibility.
         if (hasMeaningfulPartyValue(param.getPlaintiffAppellant())) {