Code review comment for ~racb/git-ubuntu:core24.v2

I realised I'd left "wip: snap: temporarily disable deb tests" so I dropped that, pushed a new branch core24.v2, and superseded the old MP. This way the old branch is preserved as that's the one that users are testing via latest/edge/core24. This change won't invalidate their tests though, and I'll make sure the same tests but deb-based are also passing before landing this.