Fix Bug #507: [住院护士站-住院记账-补费] 项目单位未获取、执行科室显示内码且缺乏默认/模糊搜索逻辑

后端SQL修复: DoctorStationAdviceAppMapper.xml 中诊疗项 min_unit_code 硬编码为空字符串,
改为使用 permitted_unit_code,使前端单位下拉框有可用选项

前端修复:
1. api.js getOrgList 添加 pageSize:100 参数,确保获取足够科室数据
2. FeeDialog.vue loadDepartmentOptions 增加回退逻辑:当树形结构无children时使用扁平records

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationAdviceAppMapper.xml

@@ -239,7 +239,7 @@
                 NULL AS activity_type_dictText,
                 -- 前端"包装单位"列：显示使用单位（permitted_unit_code）
                 T1.permitted_unit_code AS unit_code,
-                '' AS min_unit_code,
+                T1.permitted_unit_code AS min_unit_code,
                 '' AS volume,
                 '' AS method_code,
                 '' AS rate_code,