Element type translated based on the shape, not type

Oval elements, even if typed as Protein are translated to small molecules.

Pathway example: https://www.wikipathways.org/index.php/Pathway:WP4846

Translated in MINERVA: https://minerva-covid19-curation.lcsb.uni.lu/minerva/index.xhtml?id=latest_latest_WP_build&submap=48&x=814&y=401&