EDIT: I rewrote the question to add missing info and hopefully make it clearer.
Currently using https://upptime.js.org to display a status page using GitHub Actions and GitHub pages.
I noticed that on the status page, incidents have a
Subscribe to Incident text. Clicking on it only links to the GitHub issue related to that incident.
I was now wondering if there is a way to have a user automatically subscribe (Maybe with a notice/pop-up warning them about it) to an issue on GitHub when they click a button or URL.