refactor(store): 重命名上传轮播图函数防止命名冲突

- 将 handleAddBanner 函数重命名为 handleAddUploadBanner
- 更新相关点击事件绑定以使用新的函数名
- 保持上传状态逻辑不变，提升代码可读性和维护性

src/pages/store/goods/index.tsx

@@ -381,7 +381,7 @@ export default function StoreGoodsPage() {
   }
 
   /** 上传轮播图（新增） */
-  const handleAddBanner = async () => {
+  const handleAddUploadBanner = async () => {
     if (addUploadingBanner) return
     setAddUploadingBanner(true)
     try {
@@ -910,7 +910,7 @@ export default function StoreGoodsPage() {
                 ))}
                 <View
                   className='w-20 h-20 rounded-lg border border-dashed border-gray-300 flex flex-col items-center justify-center'
-                  onClick={handleAddBanner}
+                  onClick={handleAddUploadBanner}
                 >
                   <Text className='text-2xl text-gray-300 mb-0.5'>{addUploadingBanner ? '...' : '+'}</Text>
                   <Text className='text-xs text-gray-400'>{addUploadingBanner ? '上传中' : '上传'}</Text>