Promoting docblock type of a property to actual type

[weirdan]

See https://github.com/vimeo/psalm/pull/9517/files

Should this be considered a BC break? If we trust the @internal annotation, why shouldn't we trust @var as well?

[Ocramius]

The problem here is that docblock type information is not really compared to native type information at all 😬