[TwigBridge] Use label_format option for checkbox and radio labels

Author: enumag

src/Symfony/Bridge/Twig/Resources/views/Form/foundation_5_layout.html.twig

@@ -249,7 +249,14 @@
         {% set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ parent_label_class)|trim}) %}
     {% endif %}
     {% if label is empty %}
-        {% set label = name|humanize %}
+        {%- if label_format is not empty -%}
+            {% set label = label_format|replace({
+                '%name%': name,
+                '%id%': id,
+            }) %}
+        {%- else -%}
+            {% set label = name|humanize %}
+        {%- endif -%}
     {% endif %}
     <label{% for attrname, attrvalue in label_attr %} {{ attrname }}="{{ attrvalue }}"{% endfor %}>
         {{ widget|raw }}