Fix material-ui integration test (codesandbox#2680)

* Disable material-ui integration test

* maybe?

* Update sandboxes.test.js

* Update sandboxes.test.js

* update snap

Author: siddharthkp

packages/app/integration-tests/tests/__image_snapshots__/n5wy74w8vl-snap.png

@@ -27,6 +27,7 @@ const SANDBOXES = [
   '2ppkvzx570', // nested imports
   'rl2m3xklyo', // node_modules import
   'vanilla',
+  //
   'n5wy74w8vl', // material-ui generated demo
   'algolia-doc-onboarding-demos-angular-media', // algolia angular demo
   { id: 'ymjwwrw2rj', threshold: 0.05 }, // empty path