fix: type error

hooks/use-user-favorites.example.tsx

@@ -4,8 +4,16 @@
  * 这个示例展示了如何使用 useUserFavorites Hook 来获取用户的收藏列表
  */
 
+import { useEffect, useState } from 'react'
+import { FlatList, View, Text } from 'react-native'
 import { useUserFavorites } from '@/hooks'
 
+// 占位组件类型声明（实际项目中应从组件库导入）
+declare const LoadingSpinner: React.FC
+declare const LoadingMoreSpinner: React.FC
+declare const ErrorMessage: React.FC<{ message: string }>
+declare const FavoriteItem: React.FC<{ favorite: unknown }>
+
 // 示例1：基本用法
 function MyFavoritesList() {
   const {
@@ -72,7 +80,7 @@ function SearchableFavorites() {
 
 // 示例4：下拉刷新
 function RefreshableFavorites() {
-  const { favorites, loading, refreshing, refetch } = useUserFavorites()
+  const { favorites, loading, refetch } = useUserFavorites()
 
   const handleRefresh = () => {
     refetch()