cubicweb-container #3497715 [clone] handling of container subject relations to inner entities is broken [resolved]

86a60b89f2d1 likely introduced the regression

prioritynormal
typebug
done in2.3.0
load0.200
load left0.000
closed by#4bfe3d04289b [clone] Handle the clone subject relations (closes #3497715)
patch[clone] Handle the clone subject relations (closes #3497715) [applied]