Fix Bug #478: 【住院医生工作站-检验申请】点击"详情"查看检验单时，"发往科室"字段回显异常（显示为"-"）

根因：desc_json 中 targetDepartment 存为空字符串，实际执行科室保存在 wor_service_request.org_id 中
修复：在 getRequestForm SQL 中用 CASE 表达式将 org_id 注入 desc_json，当前端已有值时不覆盖

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

openhis-server-new/openhis-application/src/main/resources/mapper/regdoctorstation/RequestFormManageAppMapper.xml

@@ -15,7 +15,11 @@
                     WHERE wsr2.prescription_no = drf.prescription_no AND wsr2.delete_flag = '0'),
                    drf.name
                ) AS name,
-               drf.desc_json,
+               CASE
+                   WHEN drf.desc_json::jsonb ->> 'targetDepartment' = '' AND MIN(wsr.org_id) IS NOT NULL THEN
+                       (drf.desc_json::jsonb || jsonb_build_object('targetDepartment', MIN(wsr.org_id)::text))::text
+                   ELSE drf.desc_json
+               END AS desc_json,
                drf.requester_id,
                drf.create_time,
                ap.NAME AS patient_name,