Fixed unauthed access to launch wizard and updated test to use Owner user

refs 6a14087ccc

- `super()` is needed in `beforeModel()` hook so that the AuthenticatedRoute redirect can occur
- launch wizard acceptance test needs to use an Owner user because Admins don't have access

ghost/admin/app/routes/launch.js

@@ -5,6 +5,7 @@ export default class LaunchRoute extends AuthenticatedRoute {
     @service session;
 
     beforeModel() {
+        super.beforeModel(...arguments);
         return this.session.user.then((user) => {
             if (!user.isOwner) {
                 return this.transitionTo('home');

ghost/admin/tests/acceptance/launch-flow-test.js

@@ -16,7 +16,7 @@ describe('Acceptance: Launch flow', function () {
 
     describe('when logged in', function () {
         beforeEach(async function () {
-            let role = this.server.create('role', {name: 'Administrator'});
+            let role = this.server.create('role', {name: 'Owner'});
             this.server.create('user', {roles: [role]});
 
             return await authenticateSession();