Embedded XLSX spreadsheets and other OLE objects
became small in Writer after a roundtrip between
LibO and MSO, caused by the empty drawing path of
OLE shapes.

Change-Id: I4cd39d4bcd6707cc5a3b8e40dde8c6148a20cabc
Reviewed-on: https://gerrit.libreoffice.org/66053
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>