EZP-29119: Display proper validation error message when non-image fil…

…e uploaded in image FieldType

src/bundle/Resources/views/content/form_fields.html.twig

@@ -21,6 +21,36 @@
 
 {# general content editing theming #}
 
+{% block form_label -%}
+    {% if label is not same as(false) -%}
+        {%- if compound is defined and compound -%}
+            {%- set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' col-form-label')|trim}) -%}
+        {%- else -%}
+            {%- set label_attr = label_attr|merge({for: id, class: (label_attr.class|default('') ~ ' form-control-label')|trim}) -%}
+        {%- endif -%}
+        {% if required -%}
+            {% set label_attr = label_attr|merge({class: (label_attr.class|default('') ~ ' required')|trim}) %}
+        {%- endif -%}
+        {% if label is empty -%}
+            {%- if label_format is not empty -%}
+                {% set label = label_format|replace({
+                    '%name%': name,
+                    '%id%': id,
+                }) %}
+            {%- else -%}
+                {% set label = name|humanize %}
+            {%- endif -%}
+        {%- endif -%}
+        <{{ element|default('label') }}{% if label_attr %}{% with { attr: label_attr } %}{{ block('attributes') }}{% endwith %}{% endif %}>{{ translation_domain is same as(false) ? label : label|trans({}, translation_domain) }}</{{ element|default('label') }}>
+    {%- else -%}
+        {%- if errors|length > 0 -%}
+            <div id="{{ id }}_errors" class="mb-2">
+                {{- form_errors(form) -}}
+            </div>
+        {%- endif -%}
+    {%- endif -%}
+{%- endblock form_label %}
+
 {%- block form_errors -%}
     {%- if errors|length > 0 -%}
         {%- for error in errors -%}