#2939 ProgressInfo: Reintroduce process envents, to update the progress dialog durig processing on linux/mac.

Introduced isActive and used this info to block sheduled redraw/display model regen when progress bar is active, to avoid unintended recursive behaviour resulting in crashes.

ApplicationCode/ProjectDataModel/Rim3dView.cpp

@@ -256,7 +256,7 @@ QImage Rim3dView::snapshotWindowContent()
     if (m_viewer)
     {
         // Force update of scheduled display models before snapshotting
-        RiaViewRedrawScheduler::instance()->slotUpdateScheduledDisplayModels();
+        RiaViewRedrawScheduler::instance()->updateAndRedrawScheduledViews();
 
         m_viewer->repaint();