fix(accordion): apply carbon element decorator for accordion skeleton

[annawen1]

Related Ticket(s)

Closes # {{Provide issue number link(s) to the related ticket(s) that this pull request addresses}}

Description

Adopter running into issues with accordion component when using the accordion in multiple libraries as the accordion-skeleton component is not using the carbonElement decorator.

This PR also fixes a couple smaller issues with missing the select import in the pagination/index.js file and missing stylesheet import for the dropdown stackblitz example

Changelog

Changed

• accordion-skeleton to use custom carbonElement decorator
• add select import in the pagination/index.js file
• include stylesheet import in the dropdown example

[ibmdotcom-bot]

Deploy preview created for package Web Components HTML Test Application:
https://ibmdotcom-web-components-html-test-upstream.s3.us-east.cloud-object-storage.appdomain.cloud/deploy-previews/11989/index.html

Built with commit: 6efeecf5407254be6f0f1616765cd4f6111c9059

[ibmdotcom-bot]

Deploy preview created for package Carbon Web Components:
https://carbon-web-components.s3.us-east.cloud-object-storage.appdomain.cloud/deploy-previews/11989/index.html

Built with commit: 6efeecf5407254be6f0f1616765cd4f6111c9059

[ibmdotcom-bot]

Deploy preview created for package Web Components:
https://ibmdotcom-webcomponents.s3.us-east.cloud-object-storage.appdomain.cloud/deploy-previews/11989/index.html

Built with commit: 6efeecf5407254be6f0f1616765cd4f6111c9059

[ibmdotcom-bot]

Deploy preview created for package Web Components (React wrapper):
https://ibmdotcom-web-components-react.s3-web.us-east.cloud-object-storage.appdomain.cloud/deploy-previews/11989/index.html

Built with commit: 6efeecf5407254be6f0f1616765cd4f6111c9059

[github-actions]

Hey there! This issue/pull request was referenced in recently released v2.12.0.