Fix E2E tests for PrimeVue 4 CSS class rename (p-dropdown to p-select)

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

cypress/e2e/compare.cy.js

@@ -16,12 +16,12 @@ describe('Compare', () => {
       'By Last Update (A to Z)', 'By Last Update (Z to A)',
     ];
 
-    cy.get('.p-dropdown').click();
-    cy.get('.p-dropdown-items')
-      .find('.p-dropdown-item')
+    cy.get('.p-select').click();
+    cy.get('.p-select-list')
+      .find('.p-select-option')
       .then($options => {
         const actualOptions = $options
-          .map((index, elem) => Cypress.$(elem).find('.p-dropdown-item-label').text())
+          .map((index, elem) => Cypress.$(elem).find('.p-select-option-label').text())
           .get();
         expect(actualOptions).to.deep.equal(expectedOptions);
       });