Web: Fixed the download and preview file not authorized. (#3652)

https://github.com/infiniflow/ragflow/issues/3651

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/components/ui/navigation-menu.tsx

@@ -123,6 +123,6 @@ export {
   NavigationMenuLink,
   NavigationMenuList,
   NavigationMenuTrigger,
-  NavigationMenuViewport,
   navigationMenuTriggerStyle,
+  NavigationMenuViewport,
 };