pylint #77237 warning for E0202 may be very misleading [validation pending]

eg when the attribute is set by some client code, not in a parent class, we get

An attribute inherited from Connection hide this method

while something like

An attribute affected in cubicweb.dbapi line 591 hide this method

would be much better in general.

done in0.25.0
load left0.000
closed by#c30b0473b310 better message for E0202 (closes #77237)