Inline issue URLs in tracking issues instead of titles

Created by: felixfbecker

GitHub now automatically expands issue URLs into titles and a status icon, which looks nicer and is easier to recognize thanks to the status icon. This changes the tracking issue tool to no longer manually inline the title and number, but instead inline the URL and let GitHub do it with nicer formatting.

This is part of GitHub's new issue board features, but apparently, this improvement is already available and we can already make use of it. It will be interesting to see if this will give us benefits for the future in the new issue boards too. For now, these are easier to scan thanks to the icon and better formatting.

Here's an example:

• https://github.com/sourcegraph/sourcegraph/issues/20033

Not sure if you need to be enrolled in the Beta personally, or we've enrolled each of us org-wide. In Incognito it just falls back to GitHub's standard rendering of the issue number like "#20033 (closed)", which can still be hovered to show all the details.