refactor(tests): update viewport page object usage to async and update all effected tests (#5927)

tests/SEGDataOverlayNoHydrationThenMPR.spec.ts

@@ -14,16 +14,15 @@ test('should launch MPR with unhydrated SEG chosen from the data overlay menu',
   viewportPageObject,
 }) => {
   await rightPanelPageObject.toggle();
-  await viewportPageObject.getById('default').overlayMenu.dataOverlay.toggle();
-  await viewportPageObject
-    .getById('default')
-    .overlayMenu.dataOverlay.addSegmentation('Segmentation');
+  const dataOverlayPageObject = (await viewportPageObject.getById('default')).overlayMenu.dataOverlay;
+  await dataOverlayPageObject.toggle();
+  await dataOverlayPageObject.addSegmentation('Segmentation');
 
   // Adding an overlay should not show the LOAD button.
   assertNumberOfModalityLoadBadges({ page, expectedCount: 0 });
 
   // Hide the overlay menu.
-  await viewportPageObject.getById('default').overlayMenu.dataOverlay.toggle();
+  await dataOverlayPageObject.toggle();
 
   await page.waitForTimeout(5000);