Add reference well to well log extraction curve eclipse case (#9516)

ApplicationLibCode/ProjectDataModel/RimDepthTrackPlot.h

@@ -197,6 +197,8 @@ protected:
     void                 updatePlots();
     caf::PdmFieldHandle* userDescriptionField() override;
 
+    void updateReferenceWellPathInCurves();
+
 private:
     void cleanupBeforeClose();
     void updateSubPlotNames();