Fix SelectPanel storybook text truncation

[liuliu-dev]

The Storybook examples were importing ActionList.Item from deprecated ActionList components. The .TruncatedText CSS was not working properly because the deprecated Item doesn't have proper width constraints. Updated to use current ActionList components.

Closes #5773

Rollout strategy

• None, a storybook issue.

[changeset-bot]

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Latest commit: b082fd3

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	89.84 KB (0%)
packages/react/dist/browser.umd.js	89.99 KB (0%)

[Copilot]

Pull Request Overview

This PR fixes text truncation issues in SelectPanel Storybook examples by migrating from deprecated ActionList components to current ones. The truncation wasn't working properly because the deprecated components lacked proper width constraints.

• Migrated imports from deprecated ActionList components to current ActionList implementation
• Replaced custom CSS truncation with built-in ActionList.Description truncate functionality
• Removed now-unnecessary custom CSS truncation styles

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/react/src/SelectPanel/SelectPanel.examples.stories.tsx	Updates imports and item renderer to use current ActionList components with proper truncation
packages/react/src/SelectPanel/SelectPanel.examples.stories.module.css	Removes custom truncation CSS that's no longer needed