Should `webbrowser.register_standard_browsers` be in the stubs?

[jonathandung]

While not exactly documented, the browser controller classes are not documented as well but included in the stubs. I find myself calling this function to make the time cost predictable when possibly making multiple webbrowser.get calls subsequently. This would be a matter of simply adding:

def register_standard_browsers() -> None: ...

[srittau]

We generally include all "public" (i.e. not prefixed with _) items in the stubs, even if they're undocumented. We used to add an # undocumented comment, but that's kind of obsolete.

[jonathandung]

I will open a PR.