1.1.412 regression - `Type "TypeAliasType" cannot be assigned to type variable` when assigning generic with type alias to a `TypeForm`

[DetachHead]

Code sample in pyright playground

from typing_extensions import TypeForm


type Foo = int | str


def fn[T](value: TypeForm[T]): ...


class Bar[T: Foo]: ...


fn(Bar[Foo]) # error

Type "TypeAliasType" cannot be assigned to type variable "T@Bar"
  Type "TypeAliasType" is not assignable to upper bound "Foo" for type variable "T@Bar"
    Type "TypeAliasType" is not assignable to type "Foo"
      "TypeAliasType" is not assignable to "int"
      "TypeAliasType" is not assignable to "str"  (reportInvalidTypeArguments)

[rchiodo]

Thanks for the bug. Looks like a regression caused by recent changes for TypeForm support.