docs(ai): wrap agent skills installation tabs

[lamek]

Adds wrapped="true" to the installation tabs on the agent skills page to improve visual grouping.

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[gemini-code-assist]

Code Review

This pull request updates the documentation in agent-skills.md by adding the wrapped="true" attribute to the <Tabs> component with the key ai-client-tabs. There are no review comments, and I have no feedback to provide.

[flutter-website-bot]

Staged preview of the updated docs.flutter.dev site (updated for commit 6f7ff1c):

https://flutter-docs-prod--docs-pr13677-wrapped-skills-tab-yym9tkh9.web.app

[flutter-website-bot]

Staged preview of the updated flutter.dev site (updated for commit 6f7ff1c):

https://flutter-dev-230821--www-pr13677-wrapped-skills-tab-urz99z0d.web.app