[python][template] move _path_to_item of simple init to avoid name error (#8737)

* [python][template] move _path_to_item of simple init up so its avaliable for missing default errors

* update generated examples

Author: RonnyPfannschmidt

.generator/templates/model_templates/method_init_simple.mustache

@@ -20,6 +20,8 @@
             value ({{{dataType}}}):{{#description}} {{{description}}}.{{/description}}{{#defaultValue}} if omitted defaults to {{{defaultValue}}}{{/defaultValue}}{{#allowableValues}}, must be one of [{{#enumVars}}{{{value}}}, {{/enumVars}}]{{/allowableValues}}  # noqa: E501
 {{> model_templates/docstring_init_required_kwargs }}
         """
+        # required up here when default value is not given
+        _path_to_item = kwargs.pop('_path_to_item', ())
 
         if 'value' in kwargs:
             value = kwargs.pop('value')
@@ -41,7 +43,6 @@
 
         _check_type = kwargs.pop('_check_type', True)
         _spec_property_naming = kwargs.pop('_spec_property_naming', False)
-        _path_to_item = kwargs.pop('_path_to_item', ())
         _configuration = kwargs.pop('_configuration', None)
         _visited_composed_classes = kwargs.pop('_visited_composed_classes', ())