WIP: This MR fix a issue when closing document.

TODO: Update to new API to get sp_lpe_item

LPE items are destooyed calling to remove path effects but in this time sp_lpe_item is not available and inkscape crash when we delete a LPE item with affected effects

To solve it I use a Thomas fix for transforming LPE and use hreflist to refresh the sp_lpe_item if ref is valid