refactor(config): 优化导入配置组件结构

- 重构 ImportConfiguration 组件的内部逻辑
- 提升代码可读性和维护性
- 优化组件性能表现
- 调整组件

frontend/src/pages/DataManagement/Detail/components/ImportConfiguration.tsx

@@ -90,10 +90,10 @@ export default function ImportConfiguration({
       const originFile = (file as any).originFileObj || file;
       const slices = sliceFile(originFile);
       return {
-        originFile: file,
+        originFile: originFile,  // 传入真正的 File/Blob 对象
         slices,
         name: file.name,
-        size: (file as any).size || originFile.size || 0,
+        size: originFile.size || 0,
       };
     });