Allow to specify `show_numbers` in `ChoiceInput`

[Lauszus]

It would be nice to be able to hide the numbers when using ChoiceInput by setting show_numbers to False:

python-prompt-toolkit/src/prompt_toolkit/shortcuts/choice_input.py

Line 131 in f04219e

show_numbers=True,

Currently I have hidden them using this hack:

class ChoiceInputNoNumbers(ChoiceInput[_T]):
    """ChoiceInput with row numbers hidden."""

    @override
    def _create_application(self) -> Application[_T]:
        app = super()._create_application()
        ctrl = app.layout.current_window.content
        if hasattr(ctrl, "text") and isinstance(getattr(ctrl.text, "__self__", None), RadioList):
            ctrl.text.__self__.show_numbers = False
        return app