XXX erp5_core: no need to show the checkbox as editable

form_list does not use Base_edit

XXX TODO Formulator checkbox must be modified to not render an input when the field is in read only
Otherwise, in listbox, it creates an input inside a `a` element, which is not valid html

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/AlarmTool_viewAlarmList/listbox_enabled.xml

@@ -137,7 +137,7 @@
                 </item>
                 <item>
                     <key> <string>editable</string> </key>
-                    <value> <int>1</int> </value>
+                    <value> <int>0</int> </value>
                 </item>
                 <item>
                     <key> <string>enabled</string> </key>
@@ -149,12 +149,16 @@
                 </item>
                 <item>
                     <key> <string>extra</string> </key>
-                    <value> <string>disabled</string> </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>hidden</string> </key>
                     <value> <int>0</int> </value>
                 </item>
+                <item>
+                    <key> <string>required</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
                 <item>
                     <key> <string>title</string> </key>
                     <value> <string>listbox_enabled</string> </value>