fix(stories): use Space for vertical stacks of inline-level items

[tenphi]

Replace Flow with Space flow="column" in stories where children are inline-level (ItemButton/Item/Button/Text), so vertical stacking and gap actually apply. Flow stays block-flow as designed.

Describe changes

Checklist

Before taking this PR from the draft, please, make sure you have done the following:

• Pipeline is passed
• Tests are added (including unit tests and stories in the storybook)
• Tests are passed successfully
• If you're adding a new component/new props, add stories that describe how this component/prop works
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Closes: N/A

Other information

---

Note

Low Risk
Low risk because changes are limited to Storybook layout markup and imports, with no production component logic modified.

Overview
Storybook examples for ItemAction, ItemButton, Menu, Item, ComboBox, FilterPicker, ListBox, TextArea, and Tabs replace Flow wrappers with Space flow="column" (or Space flow="row"/"row wrap") where children are inline-level, ensuring vertical stacking and gap spacing apply as intended.

Also adjusts related story layout details (imports, a few wrapper props, and removing manual margin spacing in TextArea stories in favor of Space gaps).

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Project	Deployment	Actions	Updated (UTC)
cube-ui-kit	Ready	Preview, Comment	May 14, 2026 0:39am

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[github-actions]

📦 NPM canary release

Deployed canary version 0.0.0-canary-efb338d.

[github-actions]

🏋️ Size limit report

Name	Size	Passed?
All	393.38 KB (+0.05% 🔺)	Yes 🎉
Tree shaking (just a Button)	112.42 KB (+0.12% 🔺)	Yes 🎉

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[github-actions]

🧪 Storybook is successfully deployed!

• 👀 Review changes: https://www.chromatic.com/build?appId=626ee6db91d1c8004a912249&number=3404
• 👨‍🎨 Preview storybook: https://626ee6db91d1c8004a912249-vfjnjhqyhq.chromatic.com/

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