cubicweb #2419040 too restrictive actions box selector [validation pending]

This box selector use non_final_entity selector, while nothing prevent it to run without that condition met. The actions box display condition should simply be availibility of some actions.

prioritynormal
typebug
done in3.15.2
load0.100
load left0.000
closed by#b5b263f1ad67 [ui] actions box should be displayed if there are some actions, not if context is an entity. Closes #2419040
ticket traceability chain