Mapped geometry concept diagram is missing the reldefinesbytype

As per the below diagram, we should show the object typing and the shared representation map.

Also as per doc sentence:

> Elements may have a 'Mapped Geometry' representation that reuses the concept Product Type Shape at the corresponding product type, as defined by the concept Object Typing.


Start with the referenced geometry concept diagram and the quoted documentation sentence, then inspect the repository for the source of that diagram. Done means the published diagram shows object typing and the shared representation map consistently with the sentence, including the missing reldefinesbytype relationship.

Written by the indexing model from the issue text.