[EuiToolTip] Add display prop

[Phizzard]

Summary

This feature adds a display prop to the EuiTooltip component to be a means of quick customization for handling display values, instead of manually adding a class into the prop anchorClassName.

A similar implementation of this exists in the EuiPopover component.

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
• 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]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

💚 CLA has been signed

[cchaos]

Welcome @Phizzard 👋
Would you please sign the CLA linked below. Be sure to use the same email address linked to your Github account.
I'll get our CI (Jenkins) started for you which will run our tests and get a preview built.
Jenkins, test this

[cchaos]

Also don't forget to check off or cross out items in the summary checklist. One additional thing you'll need to add is a changelog entry which you can find a link to in the checklist. Just be sure to follow the pattern in that file.

[cchaos]

Oh and we'll need an additional Jest test for this new prop which you can add in the associated tool_tip.test.tsx file

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_4096/

[cchaos]

Jenkins, test this

[cchaos]

Unfortunately, this isn't actually working because of the way the component renders.

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_4096/

[cchaos]

Jenkins, test this

[kibanamachine]

Preview documentation changes for this PR: https://eui.elastic.co/pr_4096/

[cchaos]

Thanks @Phizzard for making those changes. One last thing is that it'd be great to see an example of this in the docs. Can you add one where it's using a <EuiButton fullWidth> component as the children?

[cchaos]

This isn't used anywhere, safe to remove.

Suggested change

export const DISPLAY = Object.keys(displayToClassNameMap);

[cchaos]

Suggested change

	- Added `display` prop to `EuiTooltip` ([#4096](https://github.com/elastic/eui/pull/4096))
	- Added `display` prop to `EuiTooltip` ([#4096](https://github.com/elastic/eui/pull/4096))

[cchaos]

Also, it looks like you'll need to merge master to get the updated changelog file and move this to the newest master section.

[cchaos]

Hey @Phizzard. Looks like we had dueling PR's for this one and #4148 was able to make it in first. We appreciate all the work you did on this one. Please feel free to grab another from our list and be sure the reference the issue in your PR so people can see you've got it started already.