Improve compound/dual axis examples (combine and add)

[techniq]

No description provided.

[changeset-bot]

⚠️ No Changeset found

Latest commit: fa25bbd

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

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
layerchart	✅ Ready (View Log)	Visit Preview	fa25bbd

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/layerchart@539

commit: fa25bbd