docs: add active tab crossfade transition to examples

[anatolzak]

Before submitting the PR, please make sure you do the following

• If your PR isn't addressing a small fix (like a typo), it references an issue where it is discussed ahead of time and assigned to you. In many cases, features are absent for a reason.
• Prefix your PR title with feat:, fix:, chore:, or docs:.
• This message body should clearly illustrate what problems it solves.
• Follows the contribution guidelines.
• Format & lint the code with pnpm format and pnpm lint

Before:

Screen.Recording.2024-01-14.at.7.39.42.PM.mov

After:

Screen.Recording.2024-01-14.at.7.39.20.PM.mov

Before:

Screen.Recording.2024-01-14.at.7.40.22.PM.mov

After:

Screen.Recording.2024-01-14.at.7.40.33.PM.mov

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
shadcn-svelte	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 14, 2024 5:46pm

[changeset-bot]

⚠️ No Changeset found

Latest commit: ecc00de

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[huntabyte]

Clean! 🧼