Add ability to show a group's label on hover

[jeff-phillips-18]

Describe the problem
When zoomed out and not showing details, I would like to see the group's label show up when I hover over the group to give me access to the actions (expand, collapse, context menu).

How do you reproduce the problem?
Zoom out to where details are not shown, hover on a group. You see the group get highlighted but you don't see its label.

Expected behavior
Highlight the group and show its label

Is this issue blocking you?
no

Screenshots

[jshaughn]

+1 to this request, would like to see this in PFT 5, thanks!

[github-actions]

🎉 This issue has been resolved in version 5.4.0-prerelease.7 🎉

The release is available on:

• GitHub release
• npm package (@prerelease dist-tag)

Your semantic-release bot 📦🚀