erp5_hal_json_style: get all fields in group list

Fix bug:
when a field's enable value is defined by TALES, it'll not be in group list

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/ERP5Document_getHateoas.xml

@@ -493,7 +493,7 @@ def renderFormDefinition(form, response_dict):\n
     if group[\'gid\'].find(\'hidden\') < 0:\n
       field_list = []\n
 \n
-      for field in form.get_fields_in_group(group[\'goid\']):\n
+      for field in form.get_fields_in_group(group[\'goid\'], include_disabled=1):\n
         field_list.append((field.id, renderRawField(field)))\n
 \n
       group_list.append((group[\'gid\'], field_list))\n