rql #9441457 bad annotation on "Any X, EID WHERE X eid EID" [in-progress]

in this case, X.stinfo['uidrel'] should be None instead of linking to "X eid EID" which can't be considered as a deambiguifying relation since eid value isn't specified.

done in0.34.2
closed by<not specified>
patchDo not set uidrel if RHS of the relation is not a constant. [reviewed]