fix(viewport): Initial blank image on SR/SEG initial display (#3304)

* fix: Blank display area on initial DICOM SR load

* Docs

* Fix a NPE

extensions/cornerstone/src/Viewport/OHIFCornerstoneViewport.tsx

@@ -390,8 +390,9 @@ const OHIFCornerstoneViewport = React.memo(props => {
         initialImageIndex
       );
 
-      storePresentation();
-
+      // The presentation state will have been stored previously by closing
+      // a viewport.  Otherwise, this viewport will be unchanged and the
+      // presentation information will be directly carried over.
       const {
         lutPresentationStore,
         positionPresentationStore,