Migrate Cypress E2E from cy.intercept to MSW service worker

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cypress/e2e/filesCompare.cy.js

@@ -9,7 +9,7 @@ describe("Files Page - COMPARE Tab", () => {
   beforeEach(() => {
     loginWithFixtures();
     cy.visit("/files");
-    cy.wait("@getFiles");
+    cy.contains("sample-process.xes").should("exist");
     // Switch to COMPARE tab
     cy.contains("li", "COMPARE").click();
   });