Tabs: hyphenate tab labels

[ciampo]

What?

Related to #62020

Add automatic hyphenation for tab labels in the Tabs component

Why?

To prevent long tab labels from pushing the width of the tab list and causing unexpected scrolling behavior.

How?

By using the hyphens CSS property as suggested by @jameskoster

Testing Instructions

• Open Storybook
• Change the tab labels to become more verbose, including very long single words
• Observe how the labels are broken (hyphenated) into multiple lines, preventing the tablist from overflowing and causing horizontal scroll in the document

Screenshots or screencast

Before (trunk)	After (this PR)

[github-actions]

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

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[tyxla]

LGTM 👍

Given multiline tabs should be a rare edge-case, I think this is a good compromise.