SYSML2 — RVVAVariable_Mapping uses CommonAssignmentActionOwningMembership_Mapping, but should be a factory class

RVVAVariable_Mapping uses CommonAssignmentActionOwningMembership_Mapping, but it should be the factory class AssignmentActionUsageOwningMembership_Factory.

The resolution SYSML2-4 changed CommonAssignmentActionOwningMembership_Mapping to AssignmentActionUsageOwningMembership_Factory, but oversaw the usages of the mapping class in RVVAVariable_Mapping.