do not drop embed label classes

Author: xabbuh

src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig

@@ -90,6 +90,10 @@
         {%- if required -%}
             {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' required')|trim}) -%}
         {%- endif -%}
+        {%- if parent_label_class is defined -%}
+            {% set embed_label_classes = parent_label_class|split(' ')|filter(class => class in ['checkbox-inline', 'radio-inline']) %}
+            {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' ' ~ embed_label_classes|join(' '))|trim}) -%}
+        {% endif %}
         {%- if label is not same as(false) and label is empty -%}
             {%- if label_format is not empty -%}
                 {%- set label = label_format|replace({

src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig

@@ -283,6 +283,10 @@
         {%- if required -%}
             {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' required')|trim}) -%}
         {%- endif -%}
+        {%- if parent_label_class is defined -%}
+            {% set embed_label_classes = parent_label_class|split(' ')|filter(class => class in ['checkbox-inline', 'radio-inline']) %}
+            {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' ' ~ embed_label_classes|join(' '))|trim}) -%}
+        {% endif %}
         {%- if label is not same as(false) and label is empty -%}
             {%- if label_format is not empty -%}
                 {%- set label = label_format|replace({

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

@@ -253,6 +253,10 @@
     {% if errors|length > 0 -%}
         {% set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' error')|trim}) %}
     {% endif %}
+    {%- if parent_label_class is defined -%}
+        {% set embed_label_classes = parent_label_class|split(' ')|filter(class => class in ['checkbox-inline', 'radio-inline']) %}
+        {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' ' ~ embed_label_classes|join(' '))|trim}) -%}
+    {% endif %}
     {% if label is empty %}
         {%- if label_format is not empty -%}
             {% set label = label_format|replace({