feat: Automate tracking prompts for a less disruptive annotation workflow (#4822)

Co-authored-by: Devu Jayalekshmi <devu.jayalekshmi@trenser.com>

platform/app/src/appInit.js

@@ -47,6 +47,7 @@ async function appInit(appConfigOrFunc, defaultExtensions, defaultModes) {
   };
   // Default the peer import function
   appConfig.peerImport ||= peerImport;
+  appConfig.measurementTrackingMode ||= 'standard';
 
   const extensionManager = new ExtensionManager({
     commandsManager,

platform/app/src/components/ViewportGrid.tsx

@@ -257,6 +257,7 @@ function ViewerViewportGrid(props: withAppTypes) {
   }, [viewports, _getUpdatedViewports]);
 
   const onDropHandler = (viewportId, { displaySetInstanceUID }) => {
+    const { viewportGridService } = servicesManager.services;
     const customOnDropHandler = customizationService.getCustomization('customOnDropHandler');
     const dropHandlerPromise = customOnDropHandler({
       ...props,
@@ -264,13 +265,13 @@ function ViewerViewportGrid(props: withAppTypes) {
       displaySetInstanceUID,
       appConfig,
     });
-
     dropHandlerPromise.then(({ handled }) => {
       if (!handled) {
         const updatedViewports = _getUpdatedViewports(viewportId, displaySetInstanceUID);
         viewportGridService.setDisplaySetsForViewports(updatedViewports);
       }
     });
+    viewportGridService.publishViewportOnDropHandled({ displaySetInstanceUID });
   };
 
   // Store previous isReferenceViewable values to avoid infinite loops