Permanent materialization load failure is when JDG source goes down

During the external materialization load, if the target cache database goes offline, the materialization job stops, but the Status table is left in LOADING state, which will never recover when the target cache database comes back up again.

This situation is observed when JDG is used in OpenShift along with JDV However, behavior can occur in standalone situations too. The system should resilient and must recover in this situation.