Clean up Tabs animation logic

[DaniGuardiola]

Follow-up to #65808

What?

Moved the useAnimatedOffsetRect to the utils dir which is now used from Tabs. Also, cleaned up tabs a bit and extracted the scroll logic into a hook (inlined in the file).

This will also fix some issues in the indicator animation that make it skip around in some cases.

Testing Instructions

Try the Tabs stories in Storybook, and tabs instances in WP.

[github-actions]

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Co-authored-by: DaniGuardiola <daniguardiola@git.wordpress.org>
Co-authored-by: ciampo <mciampini@git.wordpress.org>

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[ciampo]

LGTM 🚀

• ✅ Code changes look good
• ✅ Tests well in Storybook
• ✅ No regressions in the editor

[github-actions]

Flaky tests detected in 143bc3d.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/11180870751
📝 Reported issues:

• [Flaky Test] Navigates the items list via UP/DOWN arrow keys #64334 in /test/e2e/specs/site-editor/dataviews-list-layout-keyboard.spec.js

[cbravobernal]

I just cherry-picked this PR to the release/19.4 branch to get it included in the next release: a1b696d