Adds support for tertiary buttons inside of the widget extension

What does this MR do and why?

Adds support for tertiary buttons inside of widget extensions. These buttons are the same buttons we currently have, Manage licenses etc.

Screenshots or screen recordings

On smaller screen sizes it turns into a dropdown:

How to set up and validate locally

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.