fix(viewport-sync): remember synced viewports bw stack and volume and RENAME StackImageSync to ImageSliceSync (#3849)

platform/app/cypress/integration/measurement-tracking/OHIFCornerstoneToolbar.spec.js

@@ -427,7 +427,7 @@ describe('OHIF Cornerstone Toolbar', () => {
   it('checks if stack sync is preserved on new display set and uses FOR', () => {
     // Active stack image sync and reference lines
     cy.get('[data-cy="MoreTools-split-button-secondary"]').click();
-    cy.get('[data-cy="StackImageSync"]').click();
+    cy.get('[data-cy="ImageSliceSync"]').click();
     // Add reference lines as that sometimes throws an exception
     cy.get('[data-cy="MoreTools-split-button-secondary"]').click();
     cy.get('[data-cy="ReferenceLines"]').click();

platform/app/cypress/integration/volume/MPR.spec.js

@@ -65,9 +65,9 @@ describe('OHIF MPR', () => {
         const viewports = cornerstone.getRenderingEngines()[0].getViewports();
 
         // The stack viewport still exists after the changes to viewportId and inde
-        const imageData1 = viewports[1].getImageData();
-        const imageData2 = viewports[2].getImageData();
-        const imageData3 = viewports[3].getImageData();
+        const imageData1 = viewports[0].getImageData();
+        const imageData2 = viewports[1].getImageData();
+        const imageData3 = viewports[2].getImageData();
 
         // for some reason map doesn't work here
         cy.wrap(imageData1).should('not.be', undefined);