🐛 fix(components): 修复部门选择器值处理逻辑

- 移除将0值转换为undefined的错误处理，允许正确传递0值

src/client/admin/components/LazyDepartmentTreeSelect.tsx

@@ -157,7 +157,7 @@ const LazyDepartmentTreeSelect: React.FC<LazyDepartmentTreeSelectProps> = ({
   // 处理值变化
   const handleChange = (newValue: number | undefined) => {
     if (onChange) {
-      onChange(newValue === 0 ? undefined : newValue);
+      onChange(newValue);
     }
   };