fix: 修复 form stream 失效问题

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.77%. Comparing base (71c3608) to head (500a5e8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #133 +/- ## ========================================== + Coverage 92.47% 92.77% +0.29% ========================================== Files 6 7 +1 Lines 1356 1370 +14 Branches 182 185 +3 ========================================== + Hits 1254 1271 +17 + Misses 102 99 -3 ```

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