Twenty Nineteen: Consider adding a slide-out animation when the touch menu is closed

[kjellr]

For the mobile menu, we have a nice slide-in animation for when the menu opens, but we do not have a slide-out animation when the menu closes. This would be a nice additional level of polish to include.

Current slide-in animation for reference:

[anevins]

Edit: okay bad example, will create a new ticket

[karmatosed]

This to me would have made sense to me close to the release but I am not sure it does now in light of the theme having been out for a while. I am going to as a result note put this as a recommendation to close. Thank you.

[karmatosed]

For now, I am moving this to close thank you.