MODSOURMAN-1066 Correct error message (#820)

* Add handling if DI_ERROR is not sent

* Check entity type not null when constructing DI_ERROR payload

* Add test

* Fail future with the actual cause (parsing exception) to be shown on UI

mod-source-record-manager-server/src/main/java/org/folio/services/RecordsPublishingServiceImpl.java

@@ -166,6 +166,6 @@ public Future<Boolean> sendDiErrorEvent(Throwable throwable,
         }
       }
       LOGGER.warn("sendDiErrorEvent:: Appropriate DI_ERROR payload builder not found, DI_ERROR without records info will be send");
-      return Future.failedFuture(new NotFoundException(format("Couldn't find DI_ERROR payload builder for recordType %s", currentRecord.getRecordType())));
+      return Future.failedFuture(throwable);
   }
 }