Fixing custom attributes notifications on name change

taiga/projects/history/templates/emails/includes/fields_diff-html.jinja

@@ -184,6 +184,7 @@
         {% endif %}
         {% if values.changed %}
             {% for attr in values['changed'] %}
+                {% if attr.changes.value%}
                 <tr>
                     <td valign="middle" rowspan="2" class="update-row-name">
                         <h3>{{ attr.name }}</h3>
@@ -199,6 +200,7 @@
                         <strong>{{ attr.changes.value.1|linebreaksbr }}</strong>
                     </td>
                 </tr>
+                {% endif %}
             {% endfor %}
         {% endif %}
         {% if values.deleted %}