Our CaseListService, which forms the bases if our case fetching,
currently returns a list with the final cases, which excludes
cases that were filered out due to configuration and other settings
(e.g. to do with visibility), as well as cases that erroneously
couldn't be resolved (e.g. due to a failred to fetch the attached
catalogi). We should keep track of all these exceptions and
return these as a result, so logging will provide better context
when troubleshooting (new) ZGW API connections.