SYSML2 — ElementMain_Mapping::ownedRelationship is wrong

ElementMain_Mapping::ownedRelationship deals with owned comments and tries to create an ownership relationship thanks to ElementOwnership_Mapping.
Instead, this is an Annotation relationship that shall be used here. We can get it thanks to the CommentAnnotation_Mapping.

However, CommentAnnotation_Mapping misses the computation of ownedRelatedElement that is left to its default value, meaning that the ownership of a comment is never set.