#9464 contour plot crash on legend levels change

The geometry was not properly cleared when on legend changed, and would lead to
crash when number of legend levels decreased.
Janitor: Fix two crashes when loading repro case

ApplicationLibCode/ProjectDataModel/RimEclipseContourMapView.cpp

@@ -240,6 +240,7 @@ void RimEclipseContourMapView::onUpdateDisplayModelForCurrentTimeStep()
 {
     static_cast<RimEclipsePropertyFilterCollection*>( nativePropertyFilterCollection() )->updateFromCurrentTimeStep();
 
+    m_contourMapProjection->clearGeometry();
     updateGeometry();
 }