ci: Added verification on Before hook to avoid navigating again to viewer page (#1505)

* Added verification on Before hook to avoid navigating again to viewer page

* Removed unecessary screenshots and duplicated test cases

* Navigation Fix for HTML extension and improved Flip button verification

Co-authored-by: Danny Brown <danny.ri.brown@gmail.com>

platform/viewer/cypress/integration/visual-regression/PercyCheckOHIFStudyViewer.spec.js

@@ -1,8 +1,9 @@
 describe('Visual Regression - OHIF Study Viewer Page', function() {
-  before(function() {
-    cy.openStudyInViewer('1.2.840.113619.2.5.1762583153.215519.978957063.78');
-    cy.waitDicomImage();
-    cy.expectMinimumThumbnails(6);
+  before(() => {
+    cy.checkStudyRouteInViewer(
+      '1.2.840.113619.2.5.1762583153.215519.978957063.78'
+    );
+    cy.expectMinimumThumbnails(5);
   });
 
   beforeEach(function() {