feat(Tree): add Tree.ItemContentText, Tree.ItemContentAddon, and item alignment (DS-5222)

[KamilEmeleev]

No description provided.

[github-actions]

Visit the preview URL for this PR (updated for commit 9667cb7):

https://react-koobiq-next--prs-412-rgsiou1n.web.app

_{(expires Sat, 11 Jul 2026 13:05:02 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: fc29847d4a9e5cb1adf458c76a9b681c76e2eeff}

[Copilot]

Pull request overview

This PR extends the Tree component API in @koobiq/react-components by introducing Tree.ItemContentText and Tree.ItemContentAddon helpers (reusing List primitives), and adds an align prop to Tree.Item to control vertical alignment for multi-line/caption layouts.

Changes:

• Added Tree.ItemContentText and Tree.ItemContentAddon as compound members on Tree.
• Added align?: ItemPropAlign support for Tree.Item (rendered via data-align).
• Updated docs/stories and tweaked Tree CSS spacing behavior when addons are present.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools/public_api_guard/components/Tree.api.md	Public API report updated; now shows new compound members and new ae-forgotten-export warnings introduced by this change.
packages/components/src/components/Tree/Tree.tsx	Adds Tree.ItemContentText/Tree.ItemContentAddon compound exports.
packages/components/src/components/Tree/Tree.stories.tsx	Updates Storybook stories to demonstrate the new item content helpers and alignment usage.
packages/components/src/components/Tree/Tree.mdx	Documentation updated to describe the new helper components and align prop.
packages/components/src/components/Tree/Tree.css	Adjusts spacing for chevron/checkbox when list item addons are present.
packages/components/src/components/Tree/components/TreeItemContent/TreeItemContent.tsx	Adds data-slot="checkbox" for styling hooks consistent with existing data-slot usage.
packages/components/src/components/Tree/components/TreeItem/types.ts	Introduces the new align prop type for TreeItemProps.
packages/components/src/components/Tree/components/TreeItem/TreeItem.tsx	Implements align runtime behavior via data-align (defaulting to center).

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.