Fix inlinejs from select2 widgets in a toggleable layout

      <widget name="source" type="select2Widget">
        <labels>
          <label mode="any">Source</label>
        </labels>
        <translated>false</translated>
        <fields>
          <field>dc:source</field>
        </fields>
        <properties widgetMode="edit">
          <property name="minChars">3</property>
          <property name="inlinejs">function aDummyFormatter(doc) {
  var markup = '&lt;b&gt;' + doc.title + '&lt;/b&gt;';
  return markup;
}</property>
          <property name="documentSchemas">dublincore</property>
          <property name="suggestionFormatter">aDummyFormatter</property>
          <property name="pageProviderName">default_document_suggestion</property>
          <property name="operationId">Repository.PageProvider</property>
        </properties>
      </widget>

Uncaught ReferenceError: aDummyFormatter is not defined