Controls: Truncate long arrays in UI

[GustavoCostaHenriques]

Closes #25778

What I did

This pull request addresses an issue within a user interface component that currently allows for the display of long lists. The problem is identified in scenarios where a prop is designed to accept a list of items and a connected story (a specific UI state or example) passes a long
list to this prop.

In this pull request rather than showing the complete list, the control will provide a preview of the list items up to a certain limit, followed by an indication that more items are available.

The following image shows how the list is presented to the user at the moment:

The following image shows the new feature implemented:

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

1. Run storybook in your localhost with the following command:
   • yarn start
2. Add these lines of code in the line 32 in the Button.stories.ts file in the sandbox>react-vite-default-ts>src>stories directory:

  list: Array(1000)
      .fill(0)
      .map((_, index) => ({
        value: `${index}`,
        name: `Option ${index}`,
        desc: `Description ${index}`,
      })),

3. Access the docs page in the button example story and test the list section.

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit 4351986. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 1 target

• nx run-many -t build -c production --parallel=3

---

Sent with 💌 from NxCloud.