[3.13] gh-121151: argparse: Fix wrapping of long usage text of arguments inside a mutually exclusive groups (GH-121159)#122777

Yhg1s merged 1 commit intopython:3.13python/cpython:3.13from

miss-islington:backport-013a092-3.13miss-islington/cpython:backport-013a092-3.13Copy head branch name to clipboard