Clone issue button is broken

e.g. https://github.com/CodeYourFuture/Module-JavaScript-Fundamentals/issues/19 can't be cloned on https://curriculum.codeyourfuture.io/itp/javascript-fundamentals/sprints/1/backlog/

I'm guessing due to backlog renames, I guess the clone button looks at the backlog name when constructing links.

If we want to fix this, we could parse out the info we need from the canonical URL. Or we could remove the button. Or we could add "clone issues" functionality to the Portal.

Reproduce the failure from the backlog URL using the canonical GitHub issue URL in the report, then inspect where the backlog clone button constructs its link. Compare the renamed backlog path with the canonical issue data. Done means the desired behavior is agreed and the button either clones the issue reliably or is removed.

Written by the indexing model from the issue text.