cubicweb #5162943 metagen may create erroneous owned_by / created_by relation [validation pending]

since there are some constraints in the database, dataimport failed when using the internal manager due to attempt to insert -1 eids in the owned_by/created_by relations

prioritynormal
typebug
done in3.20.5
load left0.000
closed by#0f8c3ac88f1e [dataimport] don't insert created_by / owned_by relations when user is the internal manager (eid = -1).
patch[dataimport] don't insert created_by / owned_by relations when user is the internal manager (eid = -1). [applied]