fix: 修复部门组织树构造错误，扁平化接口所有返回值

src/views/emergency/emergency-supplies/src/components/AddSuppliesDrawer.vue

@@ -82,7 +82,7 @@
   const deptTree = ref<DeptTree[]>();
   const getDeptTreeData = async () => {
     const res = await getAllDepartments();
-    deptTree.value = res[0].children;
+    deptTree.value = res.flatMap((item) => item.children ?? []);
   };
 
   // 表单数据