e2e alfa clear saved session before test suite

alfa-client/apps/alfa-e2e/src/support/e2e.ts

@@ -69,6 +69,12 @@ Cypress.Keyboard.defaults({
   keystrokeDelay: 30,
 });
 
+before(() => {
+  cy.log('Clearing saved session before test suite...');
+  Cypress.session.clearAllSavedSessions();
+  cy.log('...clearing done.');
+});
+
 after(() => {
   cy.log('Cleanup after test suite...');
   dropCollections();