Should `callable` narrow to `TypeIs[Callable[..., object]]` or `TypeIs[Callable]` ?

Currently, typeshed annotates

def callable(obj: object, /) -> TypeIs[Callable[..., object]]: ...

However, for the majority of type checkers this creates discrepancy between collections.abc.Callable and builtins.callable narrowing, only ty seems to consider blank Callable as if it were Callable[..., object], whereas all other type checkers treat it as Callable[..., Any].

from typing import reveal_type, TypeIs
from collections.abc import Callable

def is_callable(arg: object) -> TypeIs[Callable]:
    raise NotImplementedError

def check_callable(arg: object) -> None:
    if isinstance(arg, Callable):
        reveal_type(arg)
            
def check_callable2(arg: object) -> None:
    if callable(arg):
        reveal_type(arg)
        
def check_callable3(arg: object) -> None:
    if is_callable(arg):
        reveal_type(arg)

Comienza con la anotación builtins.callable y compárala con collections.abc.Callable. Ejecuta los ejemplos según los comportamientos de los type-checker indicados en el issue y revisa después la discusión de los comentarios para determinar qué anotación proporciona un narrowing coherente; se considera terminado cuando el stub elegido coincide con el comportamiento previsto en todos los checkers afectados.