Fix back button in teams with messenger and drive

www/common/drive-ui.js

@@ -524,6 +524,7 @@ define([
         var edPublic = priv.edPublic;
         APP.origin = priv.origin;
         APP.hideDuplicateOwned = Util.find(priv, ['settings', 'drive', 'hideDuplicate']);
+        APP.closed = false;
 
         var updateObject = driveConfig.updateObject;
         var updateSharedFolders = driveConfig.updateSharedFolders;