fix(Overlay): Drag events close overlays

[davidkbh]

Description

When the overlay received a mouse event from a drag that had just completed, it pointed to the ghost version of the element that existed for the drag, and was just removed. All the elements we inspect for being "outside the overlay" should be in the DOM, so this adds that check.

Verify that...

• [x] Any related demos were added and npm start and npm run build still works
• [x] New demos work in Safari, Chrome and Firefox
• [x] npm run lint passes
• [ ] npm test passes and code coverage is increased
• [x] npm run build still works

Bullhorn Internal Developers

• [ ] Run Novo Automation

Screenshots

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit f22b7eb):

https://novo-elements--pr1585-f-overlay-drageventf-kmvky9e7.web.app

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