90d7f4ff39
RESOLVES FRMW-2826 **What** We have many places where we define only one to one on one side of the relation. In that case it is a one to one that does not mapped by to the other side relation since it is not defined. This pr allow to create a one to one without mapped by. In order to remove breaking changes, in that case we ask the user to explicitly define the `mappedBy` as `undefined`