MR of patch #27 by mnlund

Closes #3107837

js/drupal-media.es6.js

@@ -57,7 +57,7 @@
         },
         allowedTypes: {
           type: 'array',
-          default: ['image', 'video', 'audio', 'application'],
+          default: drupalSettings.gutenberg.drupalSettings || ['image', 'video', 'audio', 'application'],
         },
       },
       edit({ attributes, className, setAttributes, isSelected, clientId }) {