[EuiTabs] Fix link tabs incorrectly wrapping

[cee-chen]

Summary

🤦 I fixed this for <button> tab content in #7309 but missed link tabs. Originally broken in #6311

Before:

After

QA

• Go to https://eui.elastic.co/pr_8073/#/navigation/tabs
• Open devtools and responsive/mobile mode, change screen size to 400px~
• [x] Confirm the first Monosodium Glutamate tab example on the page does not wrap incorrectly

General checklist

• Browser QA
  • [x] Checked in mobile
  • [x] Checked in Chrome, Safari, Edge, and Firefox ~- [ ] Checked for accessibility including keyboard-only and screenreader modes~ ~- [ ] Checked in both light and dark modes~
• Docs site QA - N/A, style bugfix
• Code quality checklist
  • [x] Updated visual regression tests ~- [ ] Added or updated jest and cypress tests~
• Release checklist
  • [x] A changelog entry exists and is marked appropriately. ~- [ ] If applicable, added the breaking change issue label (and filled out the breaking change checklist)~
• Designer checklist - N/A

[elasticmachine]

:green_heart: Build Succeeded

• Buildkite Build
• Commit: 6a08f8dafad0b7e62b22517eb89365eac76eb336