feat(cdk-experimental/ui-patterns): Tree - preview

[ok7sai]

This PR is used to preview the demo.

[github-actions[bot]]

Deployed dev-app for f29b0983ce59dce39fea4a07cb119e314a9843c2 to: https://ng-dev-previews-comp--pr-angular-components-31258-dev-3awtjj72.web.app

Note: As new commits are pushed to this pull request, this link is updated after the preview is rebuilt.

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