fastapi

50c1a928 - ✅ Refactor OpenAPI tests, prepare for Pydantic v2 (#9503)

✅ Refactor OpenAPI tests, prepare for Pydantic v2 (#9503) * ✅ Refactor OpenAPI tests, move inline, prepare for Pydantic v2 tests * ✅ Fix test module loading for conditional OpenAPI * 🐛 Fix missing pytest marker * ✅ Fix test for coverage