Stabilise Cypress login tests (#9446)

* Attempt to stabilise login tests

* More stability

* Stabilise s'more

* don't clear LS as we rely on it for enablements

* Add small delay

* Iterate

* Update login.ts

cypress/e2e/editing/editing.spec.ts

@@ -62,7 +62,7 @@ describe("Editing", () => {
             cy.get(".mx_BasicMessageComposer_input").type("Foo{backspace}{backspace}{backspace}{enter}");
             cy.checkA11y();
         });
-        cy.get(".mx_RoomView_body .mx_EventTile").contains(".mx_EventTile[data-scroll-tokens]", "Message");
+        cy.contains(".mx_RoomView_body .mx_EventTile[data-scroll-tokens]", "Message");
 
         // Assert that the edit composer has gone away
         cy.get(".mx_EditMessageComposer").should("not.exist");