Allow co owners to edit sandboxes too

Author: Ives van Hoorne

packages/app/src/app/store/modules/workspace/items.js

@@ -29,7 +29,14 @@ const LIVE = {
 };
 
 export default function getItems(store) {
-  if (store.live.isLive && !store.live.isOwner) {
+  if (
+    store.live.isLive &&
+    (store.live.isOwner ||
+      (store.user &&
+        store.currentSandbox &&
+        store.currentSandbox.author &&
+        store.currentSandbox.author.id !== store.user.id))
+  ) {
     return [FILES, LIVE];
   }