[with_annotated] Subparser should be listed as positional arguments by default

[neoniobium]

Description

When adding subparsers to a parent parser the subparsers are not listed as positional arguments in the help message of the parent parser. This behavior is different to builtin argparse as well as the Cmd2ArgumentParser.

class App(Cmd):

    @with_annotated(base_command=True)
    def do_base(self, ...) -> None:
        ...
    @with_annotated(subcommand_to="base")
    def do_base_sub(self, ...) -> None:
        ...

Expected Behavior

List subparsers as positional arguments in help message.

Actual Behavior

Subparsers not listed in help message.