cubicweb #7672764 CheckBox and Radio fieldwidgets' labels are not XML escaped [validation pending]

prioritynormal
typebug
done in3.22.0
load0.500
load left0.000
closed by#ddeac3ecdd88 [web] xml_escape CheckBox and Radio labels (closes #7672764)
patch[web] xml_escape CheckBox and Radio labels (closes #7672764) [applied]