fix(chargemanage): 修复门诊挂号退号状态检查逻辑

- 添加待诊状态检查，只允许待诊状态的患者退号
- 防止已接诊患者进行退号操作
- 完善退号业务流程的状态验证机制

openhis-server-new/openhis-application/src/main/java/com/openhis/web/chargemanage/appservice/impl/OutpatientRegistrationAppServiceImpl.java

@@ -247,6 +247,10 @@ public class OutpatientRegistrationAppServiceImpl implements IOutpatientRegistra
         if (EncounterStatus.CANCELLED.getValue().equals(byId.getStatusEnum())) {
             return R.fail(null, "该患者已经退号，请勿重复退号");
         }
+        // 只有待诊状态才能退号
+        if (!EncounterStatus.PLANNED.getValue().equals(byId.getStatusEnum())) {
+            return R.fail(null, "该患者医生已接诊，不能退号！");
+        }
         iEncounterService.returnRegister(cancelRegPaymentDto.getEncounterId());
         // 查询账户信息
         Account account = iAccountService