QmlDesigner.QmlPuppet: fix for nonInstanceChildIsDirty()

We did not take care of the case where only the transform of a child
changes but nothing else.

Task-number: QTCREATORBUG-9796
Change-Id: Id997e527193c103abf3aeb77826501fb8f701fb7
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.QmlPuppet: fix for clipping in sub items

We did not clip sub items if clipping was enabled.

Task-number: QTCREATORBUG-9604
Change-Id: I75fdabd86193fbfbf397bf3d119a1a33c72cf771
Reviewed-by: Marco Bubke <marco.bubke@digia.com>