Fix Bug #477: 住院医生工作站-住院检查申请详情弹窗中"发往科室"字段显示为短横线（-），未正常获取数据

修复 examineApplication.vue 中 recursionFun 函数的空指针异常：
1. 增加 orgOptions.value 数组有效性校验，防止接口未返回数据时崩溃
2. 增加 obj.children 的 Array.isArray 检查，原代码直接访问 children.length 在 children 为 undefined 时抛 TypeError
3. 匹配成功后增加 break 提前退出循环
4. handleViewDetail 增加 targetDepartment 存在性检查，递归查找失败时回退显示原始 ID 值

openhis-ui-vue3/src/views/inpatientDoctor/home/components/applicationShow/examineApplication.vue

@@ -457,20 +457,27 @@ const getLocationInfo = () => {
 };
 
 const recursionFun = (targetDepartment) => {
+  if (!targetDepartment) return '';
+  if (!Array.isArray(orgOptions.value) || orgOptions.value.length === 0) return '';
   let name = '';
   for (let index = 0; index < orgOptions.value.length; index++) {
     const obj = orgOptions.value[index];
     if (obj.id == targetDepartment) {
       name = obj.name;
+      break;
     }
     const subObjArray = obj['children'];
-    for (let index = 0; index < subObjArray.length; index++) {
-      const item = subObjArray[index];
+    if (Array.isArray(subObjArray)) {
+      for (let i = 0; i < subObjArray.length; i++) {
+        const item = subObjArray[i];
         if (item.id == targetDepartment) {
           name = item.name;
+          break;
         }
       }
     }
+    if (name) break;
+  }
   return name;
 };
 
@@ -482,7 +489,10 @@ const handleViewDetail = (row) => {
   if (row.descJson) {
     try {
       const obj = JSON.parse(row.descJson);
-      obj.targetDepartment = recursionFun(obj.targetDepartment);
+      if (obj.targetDepartment) {
+        const deptName = recursionFun(obj.targetDepartment);
+        obj.targetDepartment = deptName || obj.targetDepartment;
+      }
       descJsonData.value = obj;
     } catch (e) {
       console.error('解析 descJson 失败:', e);