Add event addon purchase success page with confetti

resources/js/admin/mobile/__tests__/EventAddonsPage.test.tsx

@@ -186,7 +186,7 @@ describe('MobileEventAddonsPage', () => {
     await waitFor(() => {
       expect(checkoutMock).toHaveBeenCalledWith(fixtures.event.slug, {
         addon_key: 'extra_photos_500',
-        success_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons?addon_success=1`,
+        success_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons/success?addon_key=extra_photos_500`,
         cancel_url: `${window.location.origin}/event-admin/mobile/events/demo-event/addons`,
         accepted_terms: true,
         accepted_waiver: true,