fix: pass along type_use annotations to swagger(-core)

[tthornton3-chwy]

Summary

Preserve top-level TYPE_USE annotations when Springdoc flattens @ParameterObject fields into query parameters.

Previously, GenericParameterService only forwarded annotations from parameterized type arguments. That meant annotations like JSpecify-style @nullable on an array type, e.g. Status @nullable [] status, were dropped before schema extraction. Swagger-core therefore never saw the nullable signal and generated only type: "array".
This change forwards both:

• annotations on the field’s AnnotatedType itself
• annotations on parameterized type arguments

That allows OpenAPI 3.1 nullable array query parameters to generate:
"type": ["array", "null"]

Change Plan

• Updated GenericParameterService.resolveTypeAndTypeAnnotationsForParameter(...) to use a new helper that collects annotations from the full AnnotatedType.
• Kept the existing parameterized type-argument annotation behavior intact.
• Added a WebMVC OpenAPI 3.1 regression test app using a flattened @ParameterObject with a runtime TYPE_USE @nullable annotation on an array query parameter.
• Added the expected JSON snapshot showing type: ["array", "null"] with enum array items.

Test Plan

Ran the test suite with the new tests.