Preview doesn't work if requesting node by guid instead of id

[bjarnef]

In Umbraco backoffice a node can be requested by its id and guid.
But it seems LeBlender preview of editors only works when requesting the node by id.

E.g.
/umbraco#/content/content/edit/1234
/umbraco#/content/content/edit/763898f5-a3ca-401d-b54b-172f21e77d2f

When requesting the node by id the preview works, but it fails for the guid version, where GetValue() throw exceptions.

The variable item (Lecoati.LeBlender.Extension.Models.LeBlenderPropertyModel) is populated with the properties (Lecoati.LeBlender.Extension.Models.LeBlenderPropertyModel).

I guess the issue is that LeBlender only lookup the node by its id and not handle the lookup from guid.

LeBlender/Src/Lecoati.LeBlender.Extension/LeBlenderHelper.cs

Line 44 in 4ba7832

return umbraco.TypedContent(HttpContext.Current.Request["id"]);