cubicweb #3843440 [primary view] fix uicfg initialitation [rejected]

Initialisation of uicfg was moved to entity_call in 3.16, breaking:

pv = views.selec('primary', ...)
pv.render_entity_attributes(entity)

=> NoneType has no rsection ..

prioritynormal
typebug
done in3.21.0
load0.000
load left0.000
closed by<not specified>
patch[views/primary] move rsection and display_ctrl initialisation to __init__ [rejected]