Previously we bypassed setting rects as dirty for a scene just
before we are about to create a 3D object. With this change we
do it earlier and suspend for the whole time we are creating the
scene - so we guarantee to o it for all 3D objects in that code
path. Aferwards we resume with setting rects and mark the whole
scene as dirty so we don't miss some update.

Change-Id: Ie4dec644102140edf282a2f5f6eb7fc9b81dbe48
Reviewed-on: https://gerrit.libreoffice.org/46901Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>