make sure OpenAPI contract says there is a 422 return exception and i…

[ramonavic]

…mprove tests

Meldingen

Ticket: SIG-1234

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[Copilot]

Pull request overview

This PR updates the “answer additional question” API endpoint contract/behavior so request validation errors are represented as standard FastAPI/Pydantic 422s in the OpenAPI spec, and adjusts tests around invalid “time” answers.

Changes:

• Removes the dynamic request-body dependency that injected type based on question_id, letting FastAPI validate AnswerInputUnion directly.
• Updates the OpenAPI responses for the answer-question endpoint (removing the default_response entry).
• Expands and tightens the time-answer validation tests (adds None as an invalid input and asserts additional error details).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
tests/api/v1/endpoints/test_melding.py	Extends invalid time input cases and adds assertions on the returned validation error shape.
meldingen/api/v1/endpoints/melding.py	Simplifies the answer-question endpoint input handling to rely on direct AnswerInputUnion body parsing and adjusts documented responses.

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[Copilot]

This parametrization now includes None, but the test function annotates time_value as str | int a few lines below. With mypy --strict enabled in pre-commit, this will likely introduce a new type error; please widen the annotation to include None (or use a broader type) to keep the test type-checking clean.