dataLoader 的 defer 能力在 SSR 下使用报错

### Describe the bug

dataLoader 的 defer 能力在 SSR 下使用报错

### Expected behavior

对 SSR 下使用 defer 配置进行规范化

### Actual behavior

_No response_

### Version of ice.js

3.4.1

### Content of build.json or ice.config.mts

_No response_

### Additional context

_No response_

Start by reproducing the dataLoader defer error during SSR with ice.js 3.4.1. The issue provides no configuration, file, test, or reproduction details, so first locate the SSR dataLoader entry point and determine the expected normalization for defer; done means defer works correctly in SSR without the reported error.

Written by the indexing model from the issue text.