Multiple in-page carousels share the same id/label

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

### Code Sandbox link

_No response_

### Bug report

```markdown
This is an accessibility and testing issue. Since `aria-labelledby="nuka-carousel-heading"` and `

` are hardcoded, if a web page contains multiple carousels they all share the same ARIA name, it being the first the appears.
```