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/common/OHIFDownloadSnapshotFile.spec.js

@@ -1,7 +1,8 @@
 describe('OHIF Download Snapshot File', () => {
   before(() => {
-    cy.openStudyInViewer('1.2.840.113619.2.5.1762583153.215519.978957063.78');
-    cy.waitDicomImage();
+    cy.checkStudyRouteInViewer(
+      '1.2.840.113619.2.5.1762583153.215519.978957063.78'
+    );
     cy.expectMinimumThumbnails(5);
   });
 
@@ -105,8 +106,6 @@ describe('OHIF Download Snapshot File', () => {
     cy.get('[data-cy="show-annotations"]').check();
     // Check image preview
     cy.get('[data-cy="image-preview"]').scrollIntoView();
-    // Visual comparison
-    cy.screenshot('Download Image Modal - Show Annotations checked');
     //Compare classes that exists on Image Preview with Annotations and Without Annotation
     cy.get('[data-cy="modal-content"]')
       .find('canvas')