Fix binary object handling in multipart/form-data (File / Blob) when using nuxt

[LeiCraft]

When the body is FormData and includes a file object, the unwrapRefs logic would incorrectly convert the File / Blob values to plain JavaScript objects.
This caused binary values to be serialized incorrectly, breaking file upload.

so in order to fix the issue i updated unwrapRefs to correctly preserve File and Blob instances.

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🦋 Changeset detected

Latest commit: 6bef793

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hey-api/openapi-ts	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 40.15%. Comparing base (7ef9332) to head (6bef793).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3459      +/-   ##
==========================================
+ Coverage   40.10%   40.15%   +0.04%     
==========================================
  Files         478      478              
  Lines       17494    17496       +2     
  Branches     5305     5306       +1     
==========================================
+ Hits         7016     7025       +9     
+ Misses       8426     8421       -5     
+ Partials     2052     2050       -2     

Flag	Coverage Δ
unittests	40.15% <100.00%> (+0.04%)	⬆️

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[mrlubos]

This looks good, thank you for the fix!