Fetcher: fix local check returning unwrapped object

This resulted in error messages about failed refetches being logged.

lib/pleroma/object/fetcher.ex

@@ -54,7 +54,7 @@ def refetch_object(%Object{data: %{"id" => id}} = object) do
          {:ok, object} <- reinject_object(object, data) do
       {:ok, object}
     else
-      {:local, true} -> object
+      {:local, true} -> {:ok, object}
       e -> {:error, e}
     end
   end