I downloaded that file from the GitHub Actions workflow where it is generated. The sed command moves it into the container as otherwise it was not getting picked up at all (ref this thread: Code coverage doesn't work with GitHub action - #7 by sylfabre)
I am not sure how to grab the actual file from that stage in the workflow - it was working in a run I did before:
However that was covering the whole repo rather than just the changes in this PR - when I fixed the scm setting (ref: How to start the scanner from now and not pick up all existing issues? - #8 by RCheesley) it seemed to stop working (can’t seem to find historical runs in the SonarCloud IU).