fix: form fields of request optional

[soasurs]

Fix the issue in the previous API file where TypeScript code generated for fields of type form with optional did not mark the fields as optional.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.58%. Comparing base (8690859) to head (67fb7f9).
Report is 293 commits behind head on master.

Additional details and impacted files

see 14 files with indirect coverage changes

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[Copilot]

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