fix: Annotated's second args not work

[Dragon-GCS]

Annotated not work when it annotate a pydantic annotated_types

[Kludex]

What's the problem this solves?

Edit: I see... #10322.

[Dragon-GCS]

Yes, when using Annoated[type_, ...] as a type annotation, if the second parameter is not FieldInfo or params.Depends, but instead is a param.Path or other param.XXX, it will result in the second parameter being ignored as a metadata attribute.

The following code(fastapi.dependencies.utils:333) snippet causes the type annotation to be ignored.

fastapi_annotations = [
    arg
    for arg in annotated_args[1:]
    if isinstance(arg, (FieldInfo, params.Depends))
]

And here(fastapi.dependencies.utils:398) create a new param.Path with type_annotation that is the first argument of annotion.

if is_path_param:
    field_info = params.Path(annotation=type_annotation)

So I fix it by replacing type_annotation with annotion to construct new param when it's second argument is not FieldInfo or params.Depends