Fix the scaffolding of multi-valued elements

    <nuxeo-data-table role="widget" items="{{document.properties.LOClassification:MPCodes}}">
      <nuxeo-data-table-column name="M P Codes">
        <template>
          <div role="widget">[[item]]</div>
        </template>
      </nuxeo-data-table-column>

      <nuxeo-data-table-form>
        <template>
          <nuxeo-input value="{{item}}" label="M P Codes" type="text"></nuxeo-input>
        </template>
      </nuxeo-data-table-form>
    </nuxeo-data-table>