AlertView canceledListener is set on cloned object but not on the original in _PresentAlertOperation

[renonick87]

Bug Report

The _PresentAlertOperation sets a listener for when an AlertView should be canceled from presenting. However the operation also clones the AlertView, but sets the listener on the cloned AlertView and not the original. So the developer's copy of the AlertView never gets the correct listener attached.

Reproduction Steps

1. Pause the AlertManager's task queue with

screenManager._alertManager._canRunTasks = false;

This allows you to cancel an alert without it immediately presenting.
2. Try to present an alert, but cancel it immediately after.

screenManager.presentAlert(alertView, alertCompletionListener);
alertView.cancel();

3. Restart the AlertManager's task queue.

screenManager._alertManager._canRunTasks = true;

Expected Behavior

The AlertView is not presented, and a message is logged stating that the Alert was canceled before presenting.

Observed Behavior

The AlertView is presented, and no message is logged about the Alert being canceled.

[theresalech]

Closed via #510