TSK-1817: Added received to TaskSummaryImpl constructor.

Furthermore, added received to createUnitTestTask.
Added this so testCloneIntask() is a valid test.

lib/taskana-core/src/main/java/pro/taskana/task/internal/models/TaskSummaryImpl.java

@@ -68,6 +68,7 @@ public class TaskSummaryImpl implements TaskSummary {
   public TaskSummaryImpl() {}
 
   protected TaskSummaryImpl(TaskSummaryImpl copyFrom) {
+    received = copyFrom.received;
     created = copyFrom.created;
     claimed = copyFrom.claimed;
     completed = copyFrom.completed;

lib/taskana-core/src/test/java/acceptance/CreateTaskModelHelper.java

@@ -38,6 +38,7 @@ public class CreateTaskModelHelper {
     task.setDomain("");
     task.setAttachments(new ArrayList<>());
     Instant now = Instant.now().minus(Duration.ofMinutes(1L));
+    task.setReceived(now);
     task.setCreated(now);
     task.setModified(now);
     task.setState(TaskState.READY);