app: fix first/last child in radiogroups

js/erp5_loader.js

@@ -4001,6 +4001,10 @@
                 clone.logic.label_i18n = clone_opt.text_i18n;
                 clone.logic.value = clone_opt.value;
                 clone.attributes["data-i18n"] = clone_opt.text_i18n;
+                switch (p) {
+                  case 0: clone.position = true; break;
+                  case len -1: clone.position = false; break;
+                }
                 group.children.push(clone);
               }