bpo-46539: Pass status of special typeforms to forward references (GH-30926)
Previously this didn't matter because there weren't any valid code paths
that could trigger a type check with a special form, but after the bug
fix for `Annotated` wrapping special forms it's now possible to annotate
something like `Annotated['ClassVar[int]', (3, 4)]`. This change would
also be needed for proposed future changes, such as allowing `ClassVar`
and `Final` to nest each other in dataclasses.
(cherry picked from commit
ced50051bb752a7c1e616f4b0c001f37f0354f32)
Co-authored-by: Gregory Beauregard <greg@greg.red>