Fix(e2e): At-mention user autocomplete should open above the textbox in RHS (#27962)

* Fix(e2e): At-mention user autocomplete should open above the textbox in RHS

e2e-tests/cypress/tests/integration/channels/enterprise/system_console/user_management/user_management_admin_control_spec.js

@@ -44,7 +44,7 @@ describe('User Management', () => {
         cy.visit('/admin_console/user_management/users');
         gotoUserConfigurationPage(testUser);
 
-        verifyManageUserSettingModal(testUser);
+        verifyManageUserSettingModal(testUser, true);
 
         cy.get('#replyNotificationsTitle').should('be.visible').should('have.text', 'Reply notifications').click();
         cy.get('#notificationCommentsNever').should('be.checked');