Enum class rejected by a generic union

from collections.abc import Iterable
from enum import Enum

class Choice(Enum):
    A = "a"

def accepts_choices[T](choices: Iterable[tuple[T, str]] | type[Enum]) -> None:
    pass

accepts_choices(Choice)

error[[invalid-argument-type](https://ty.dev/rules#invalid-argument-type)]: Argument to function `accepts_choices` is incorrect
  --> a.py:18:17
   |
18 | accepts_choices(Choice)
   |                 ^^^^^^ Expected `Iterable[tuple[Unknown, str]]`, found `<class 'Choice'>`
info: type `<class 'Choice'>` is not assignable to protocol `Iterable[tuple[Unknown, str]]`
info: └── protocol member `__iter__` is incompatible
info:     └── incompatible return types: `Iterator[Choice]` is not assignable to `Iterator[tuple[Unknown, str]]`
info:         └── protocol `Iterator[Choice]` is not assignable to protocol `Iterator[tuple[Unknown, str]]`
info:             └── protocol member `__next__` is incompatible
info:                 └── incompatible return types: `Choice` is not assignable to `tuple[Unknown, str]`
info: Function defined here
  --> a.py:14:5
   |
14 | def accepts_choices[T](choices: Iterable[tuple[T, str]] | type[Enum]) -> None:
   |     ^^^^^^^^^^^^^^^    --------------------------------------------- Parameter declared here