[qem-dashboard] Loading incident... indefinitely for non-existing incident
Reported on GitHub: https://github.com/openSUSE/qem-dashboard/issues/153
Non-existing incidents like https://dashboard.qam.suse.de/incident/274053 show a "Loading incident..." message indefinitely.
- AC1: A message is shown that indicates that the incident doesn't exist
- Status changed from In Progress to Feedback