Plot panel updates (#12185)

* Support delayed updates for rel perm and pvt plots
* Support time step marker tracking view in result plot

ApplicationLibCode/UserInterface/RiuRelativePermeabilityPlotPanel.cpp

@@ -871,6 +871,15 @@ void RiuRelativePermeabilityPlotPanel::slotSomeCheckBoxStateChanged( int )
     plotUiSelectedCurves();
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RiuRelativePermeabilityPlotPanel::showEvent( QShowEvent* event )
+{
+    if ( m_plotUpdater != nullptr ) m_plotUpdater->doDelayedUpdate();
+    QWidget::showEvent( event );
+}
+
 //==================================================================================================
 //
 //