[EuiTooltip] Revert "Remove tooltip focus on mousemove (#3335)" and force visibility while element is focused

[cchaos]

Closes #5013 by reverting #3335 and applied the onFocus and onBlur event handlers to the cloned child which basically means that while the wrapped item has focus the tooltip will never close.

Before

Screen.Recording.2021-08-23.at.12.03.17.PM.mp4

Just reverting

Screen.Recording.2021-08-23.at.12.07.00.PM.mp4

Forces visibility while in focus

Screen.Recording.2021-08-23.at.12.19.20.PM.mp4

What would be even better

Is if we could also keep the tooltip shown when a user tries to interact with the contents. I know we've mostly said that interactive content should not be placed within tooltips, but use popovers instead. I still think this is correct, but I do think it would be helpful for when users might want to copy text.

Example of it not working right now:

Screen.Recording.2021-08-23.at.12.30.56.PM.mp4

Thought process:

So I've been thinking about solutions to this issue, remembering there was a "resolved" issue around closing tooltips on every mouse out/move, even when focused (#2560 & #3335). Looking at that specific issue, it seems the behavior being circumvented was when there were two or more elements in close proximity with tooltips and one is focused. I feel like most recently I've been more frustrated with tooltips closing when I don't want them to and seen less tooltips this close together.

@chandlerprall Since you were the one who originally opened the issue, was there more than just the overlapping tooltip issue?

My inclination, honestly, is just to revert #3335 or at least remove the mouse out/move listener when the element is focused.

Originally posted by @cchaos on #5013 (comment)

Checklist

• Check against all themes for compatibility in both light and dark modes
• Checked in mobile
• Checked in Chrome, Safari, Edge, and Firefox
  - [ ] Props have proper autodocs and playground toggles
• Added documentation
  - [ ] Checked Code Sandbox works for the any docs examples
  - [ ] Added or updated jest tests
• Checked for breaking changes and labeled appropriately
• Checked for accessibility including keyboard-only and screenreader modes
• A changelog entry exists and is marked appropriately

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_5066/

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_5066/

[cchaos]

FYI: I've decided to update the docs too, working on that now. Reviews can hold until I've pushed the updates.

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_5066/

[cchaos]

Ok, this is reviewable again 😸

[chandlerprall]

Changes LGTM! Tested in the deployed docs & verified some changes locally

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_5066/