Update use-document-title.ts to fix favicon.ico path (#23872)

web/hooks/use-document-title.ts

 'use client'
 import { useGlobalPublicStore } from '@/context/global-public-context'
 import { useFavicon, useTitle } from 'ahooks'
+import { basePath } from '@/utils/var'
 
 export default function useDocumentTitle(title: string) {
   const isPending = useGlobalPublicStore(s => s.isGlobalPending)
     }
     else {
       titleStr = `${prefix}Dify`
-      favicon = '/favicon.ico'
+      favicon = `${basePath}/favicon.ico`
     }
   }
   useTitle(titleStr)