(🐞) `|` operator with `_SpecialForm` determined to be `types.UnionType` it's actually `typing.Union`

```py
from typing import Any

print(reveal_type(int | Any))  #  types.UnionType
```
```
> python test.py
typing.Union[int, typing.Any]
```


This causes issues with `isinstance`, despite the fact that `isinstance` can take a `typing.Union`.

```py
from typing import Any

isinstance(1, str | Any)  # no error
```