Converting Apple's weird boolean to a normal one

apple.py

def apple_bool(email_verified: str | bool) -> bool:
    """Converts Apple's weird boolean to a normal one.

    https://developer.apple.com/documentation/signinwithapple/authenticating-users-with-sign-in-with-apple

    `email_verified` is a string or Boolean value that indicates whether
    the service verifies the email. The value can either be a string
    ("true" or "false") or a Boolean (true or false). The system may
    not verify email addresses for Sign in with Apple at Work & School users,
    and this claim is "false" or false for those users.
    """

    if isinstance(email_verified, bool):
        return email_verified
    return email_verified == 'true'