fix(order): 解决医嘱类型字段处理问题

- 优化了JSON解析逻辑，避免重复解析contentJson字段
- 确保therapyEnum字段正确传递，默认值设置为长期医嘱('1')
- 修复了医嘱保存和签发过程中类型字段丢失的问题
- 统一了前后端therapyEnum字段的默认值处理逻辑
- 添加了必要的注释说明字段处理规则

openhis-server-new/openhis-application/src/main/java/com/openhis/web/doctorstation/dto/AdviceSaveDto.java

@@ -250,7 +250,8 @@ public class AdviceSaveDto {
      */
     public AdviceSaveDto() {
         this.chineseHerbsDoseQuantity = new BigDecimal("1");
-        this.therapyEnum = TherapyTimeType.TEMPORARY.getValue();
+        // 默认设置为长期医嘱，但前端应该明确传递正确的值
+        this.therapyEnum = TherapyTimeType.LONG_TERM.getValue();
         this.practitionerId = SecurityUtils.getLoginUser().getPractitionerId();
         this.founderOrgId = SecurityUtils.getLoginUser().getOrgId(); // 开方人科室
     }

openhis-server-new/openhis-application/src/main/java/com/openhis/web/regdoctorstation/appservice/impl/AdviceManageAppServiceImpl.java

@@ -167,6 +167,7 @@ public class AdviceManageAppServiceImpl implements IAdviceManageAppService {
         Long organizationId = regAdviceSaveParam.getOrganizationId();
         // 医嘱分类信息
         List<RegAdviceSaveDto> regAdviceSaveList = regAdviceSaveParam.getRegAdviceSaveList();
+        
         // 药品
         List<RegAdviceSaveDto> medicineList = regAdviceSaveList.stream()
                 .filter(e -> ItemType.MEDICINE.getValue().equals(e.getAdviceType())).collect(Collectors.toList());