An option "showUploadButton" was added to hide upload button for issue [#883](https://github.com/Microsoft/BotFramework-WebChat/pull/883), but in v4.1.0 there is no such option. So now is it possible to hide the upload button on rederWebChat()?
An option "showUploadButton" was added to hide upload button for issue #883, but in v4.1.0 there is no such option.
So now is it possible to hide the upload button on rederWebChat()?