StoryMenu broken with new event system

[HenryLoenwind]

Describe the bug. In develop, StoryMenu is broken.

I tracked it down to

251: jQuery(document).on(':uiupdate${EVENT_NS}', () => {

This installs an event handler for:

Not quite what was intended, as ${EVENT_NS} should be expanded to .ui-bar.

Replacing the ' with backticks fixes that, but exposes a second issue:

The new code adds an extra <ul>:

A possible fix is:

#menu ul ul {
  display: contents;
}

But naturally, getting rid of the extra <ul>s would be the cleaner approach.

[HenryLoenwind]

Thanks.