Symfony version(s) affected: 4.3

Description
When using choice, selected answers are forced into strings, preventing us from using complex values such as a class with a custom __toString. This is a problem, as I need the ability to present the user with a list of display strings to choose from, but need the ID associated with that display string in order to do anything useful.

How to reproduce

class UserRoleOption
{

    public $id;
    public $name;

    public function __construct($id, $name)
    {
        $this->id = $id;
        $this->name = $name;
    }

    public function __toString()
    {
        return $this->name;
    }
}

foreach ($rolesQuery as $role) {
    $roles[] = new UserRoleOption($role->id, $role->name);
}

var_dump($this->choice('Select roles to assign', $roles));

Possible Solution
Remove the cast to string on this line: https://github.com/symfony/console/blob/master/Question/ChoiceQuestion.php#L172