docx to tei unable to deal with shapes

[peterstadler]

output is simply:

<hi style="color:red; font-size: 14pt; font-weight:bold;" rend="ERROR">�</hi>
<note place="margin" type="conversion" resp="#teitodocx">
    <hi rend="docxError">unable to handle picture here, no embed or link</hi>
</note>

(originates from https://github.com/TEIC/oxgarage/issues/9, for a test file see comment there)