Pending builds should be reflected accordingly in the UI

One of the builds that I added to the queue did not get started and even though the pipeline was pending the buildbtw UI showed "🔨" which indicates (to me) that the build is in progress.

When clicking on the build to open the Gitlab pipeline view it turned out to be not yet scheduled which is not a great UX. I think it would be good to have an indicator like "⏳" for this.