fix: FLIP animation for tabs

[snowystinger]

Closes

Followed https://css-tricks.com/animating-layouts-with-the-flip-technique/

To test, use different orientations, density, locale direction, resizing containers, etc and make sure the tabline doesn't end up in any bad places

Note, focus ring should not be included in the animation for now. We'd have to figure out how to handle manual activation.

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

🧢 Your Project:

[rspbot]

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[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the documentation

[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the documentation

[devongovett]

niiiice!

[reidbarber]

LGTM