Drilldown _hideAll does not work in 6.7.x

[driskell]

What should happen?

When calling $element.foundation('_hideAll') on a Drilldown which is currently in a submenu should restore it to the root.

What happens instead?

The Drilldown menu disappears

Possible Solution

I believe a regression in #12038 caused this - as it adds new invisible classes to aid in keyboard navigation. However, the invisible class added to the root menu is not removed in a call to _hideAll, and so the submenu is hidden and the root menu never re-appears.

Test Case and/or Steps to Reproduce (for bugs)

Test Case on 6.7.3: https://codepen.io/Driskell/pen/oNeoJpa
Compare to 6.6.3 which works: https://codepen.io/Driskell/pen/NWvwmxW

Context

N/A

Your Environment

• Foundation version(s) used: 6.7.3
• Browser(s) name and version(s): Chrome 95 but also present in all other browsers
• Device, Operating System and version: macOS Monterey
• Link to your project: N/A

Checklist

• I have read and follow the CONTRIBUTING.md document.
• There are no other issues similar to this one.
• The issue title and template are correctly filled.

[pebutler3]

@joeworkman can I take this one?

[joeworkman]

Go for it Mr. Butler! 😀

[driskell]

Thanks @pebutler3 !