fix(segmentation): Fix segmentationid undefined 5106 (#5107)

extensions/cornerstone/src/commandsModule.ts

@@ -1888,6 +1888,9 @@ function commandsModule({
       const { segmentationService } = servicesManager.services;
       const { activeViewportId } = viewportGridService.getState();
       const activeSegmentation = segmentationService.getActiveSegmentation(activeViewportId);
+      if (!activeSegmentation) {
+        return;
+      }
       segmentationService.addSegment(activeSegmentation.segmentationId);
     },
     loadSegmentationDisplaySetsForViewport: ({ viewportId, displaySetInstanceUIDs }) => {