fix: correct time.Time date-only fallback parsing in deepObject by mromaszewicz · Pull Request #95 · oapi-codegen/runtime

@mromaszewicz @claude

The date-only fallback in assignPathValues erroneously returned an error
wrapping nil after a successful parse, preventing date-only strings from
being unmarshalled into time.Time fields via deepObject.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

jamietanna