Merge branch '4.4' into 5.0

* 4.4:
  Adding an if condition on a for tag is deprecated in Twig 2.10.

Author: javiereguiluz

form/create_custom_field_type.rst

@@ -405,7 +405,7 @@ libraries are used in your application:
 
     {# templates/form/custom_types.html.twig #}
     {% block postal_address_row %}
-        {% for child in form.children if not child.rendered %}
+        {% for child in form.children|filter(child => not child.rendered) %}
             <div class="form-group">
                 {{ form_label(child) }}
                 {{ form_widget(child) }}