feat(grid): remove viewportIndex and only rely on viewportId (#3591)

Co-authored-by: Bill Wallace <wayfarer3130@gmail.com>

extensions/measurement-tracking/src/panels/PanelMeasurementTableTracking/index.tsx

@@ -25,7 +25,7 @@ const DISPLAY_STUDY_SUMMARY_INITIAL_VALUE = {
 };
 
 function PanelMeasurementTableTracking({ servicesManager, extensionManager }) {
-  const [viewportGrid, viewportGridService] = useViewportGrid();
+  const [viewportGrid] = useViewportGrid();
   const [measurementChangeTimestamp, setMeasurementsUpdated] = useState(
     Date.now().toString()
   );
@@ -157,7 +157,7 @@ function PanelMeasurementTableTracking({ servicesManager, extensionManager }) {
   }
 
   const jumpToImage = ({ uid, isActive }) => {
-    measurementService.jumpToMeasurement(viewportGrid.activeViewportIndex, uid);
+    measurementService.jumpToMeasurement(viewportGrid.activeViewportId, uid);
 
     onMeasurementItemClickHandler({ uid, isActive });
   };
@@ -280,7 +280,7 @@ function PanelMeasurementTableTracking({ servicesManager, extensionManager }) {
           onExportClick={exportReport}
           onCreateReportClick={() => {
             sendTrackedMeasurementsEvent('SAVE_REPORT', {
-              viewportIndex: viewportGrid.activeViewportIndex,
+              viewportId: viewportGrid.activeViewportId,
               isBackupSave: true,
             });
           }}