QmlDesigner: Break dependency to View3DActionCommand

The node instance view and his commands should be not called directly
from other views. There are special classes QmlItem which can do it but
every change should go through the model.

Change-Id: I734e5538d7f6ecb07d736912f647c5eb92dc7631
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/qmldesigner/components/edit3d/edit3dwidget.cpp

@@ -130,9 +130,8 @@ Edit3DWidget::Edit3DWidget(Edit3DView *view)
     view->setSeeker(seeker);
     seeker->setToolTip(QLatin1String("Seek particle system time when paused."));
 
-    QObject::connect(seeker, &SeekerSlider::positionChanged, [seeker](){
-        QmlDesignerPlugin::instance()->viewManager().nodeInstanceView()
-                ->view3DAction(View3DSeekActionCommand(seeker->position()));
+    QObject::connect(seeker, &SeekerSlider::positionChanged, [seeker, view]() {
+        view->emitView3DAction(View3DActionType::ParticlesSeek, seeker->position());
     });
 
     // Onboarding label contains instructions for new users how to get 3D content into the project