cubicweb #3712982 buggy eschema.composite_rdef_roles [validation pending]

doesn't properly consider rdefs.

prioritynormal
typebug
done in3.19.0
load0.100
load left0.000
closed by#59616edc20d7 [schema] fix buggy composite_rdef_roles and associated test
patch[schema] fix buggy composite_rdef_roles and associated test [applied]