Revert "QmlDesigner: Don't update sceneTransform for direct movements"

The resizing is not working any more.

This reverts commit afc498e24eadfbc72347fe42b6f2cc1197a54a26.

Task-number: QTCREATORBUG-12653
Change-Id: Ie5b7ebd2f8810bbdc877b61e16591c5a2bbcf2d4
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>