Feat: Admin UI (#10857)

### What problem does this PR solve?

Add admin UI for RAGFlow

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/components/ui/scroll-area.tsx

@@ -39,7 +39,8 @@ const ScrollArea = React.forwardRef<
     <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
       {children}
     </ScrollAreaPrimitive.Viewport>
-    <ScrollBar />
+    <ScrollBar orientation="horizontal" />
+    <ScrollBar orientation="vertical" />
     <ScrollAreaPrimitive.Corner />
   </ScrollAreaPrimitive.Root>
 ));