cubicweb #4943392 [forms] action handling regression [validation pending]

There is one regression (from 3.18 ? quite unsure) which prevents form.action to be effectively used when provided through:

.select('form', ..., action=...)

This impairs e.g. the inlinedit cube (or possibly the cw reledit views).

prioritynormal
typebug
done in3.19.10
load1.000
load left0.000
closed by#fbb370195199 [web/views] Honor 'action' attribute on AutomaticEntityForm, closes #4943392
patch[forms] remove buggy action computation [rejected][web/views] Clean up confusing backwards compatibility code [applied][web/views] Honor 'action' attribute on AutomaticEntityForm, closes #4943392 [applied]