fix(metadata): convert the YAML and XML nativeType of a property when it has a parent

[Maxcastel]

Q	A
Branch?	5.0
License	MIT

properties:
    App\Entity\Book:
        price:
            nativeType: int

This fails with ApiProperty::withNativeType(): Argument #1 ($nativeType) must be of type ?Symfony\Component\TypeInfo\Type, string given. The string is only converted when the extractor factory has no parent, and the YAML one always has one in the bundle. The conversion is now done in both cases.