status: when extracting arguments from `opts`, use the same default values Sometimes other code, such as commit when using `commands.commit.post-status`, calls `commands.status()` without going through the normal dispatch mechanism that would typically fill in the args to be something besides None. As a "defense in depth" mechanism for a bug where Mercurial would crash if both `commands.commit.post-status` and `experimental.directaccess` were enabled, let's sanitize these values to be identical to the values they would have when the user invoked this method from the commandline. Differential Revision: https://phab.mercurial-scm.org/D11884