message: fixes to allow changing of subflow in task configurator for error handler.
  fixes
diff: </div>
  <flogo-flow-task-configurator [actionId]="flow.id" [appId]="flow.appId" [flowId]="'root'" data-flogo-for-diagram-id="root"></flogo-flow-task-configurator>
  - <flogo-flow-task-configurator [actionId]="flow.id" [flowId]="'errorHandler'" data-flogo-for-diagram-id="errorHandler"></flogo-flow-task-configurator>
  + <flogo-flow-task-configurator [actionId]="flow.id" [appId]="flow.appId" [flowId]="'errorHandler'" data-flogo-for-diagram-id="errorHandler"></flogo-flow-task-configurator>
  <flogo-flow-error-panel *ngIf="hasTask">
  <flogo-flow-diagram *ngIf="errorHandler"
  