added one column TEST RHT for the price_total

data>
  <data>
    <xpath position="after" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']/div/table/thead/tr/th[@name='th_taxes']" meta-name="th_taxes" meta-class="text-end" meta-t-if="not doc.is_avatax">
      <th>TEST RHT</th>
    </xpath>
  </data>
  <data>
    <xpath position="after" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']/div/table/tbody/t[2]/tr/t/td[@name='td_taxes']" meta-name="td_taxes" meta-t-attf-class="text-end {{ 'text-nowrap' if len(taxes) &lt; 10 else '' }}" meta-t-if="not doc.is_avatax">
      <td>
        <span t-field="line.price_total">15</span>
      </td>
    </xpath>
  </data>
  <data>
    <xpath position="attributes" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']//td[@name='td_section_line']" meta-name="td_section_line" meta-colspan="99">
      <attribute name="colspan">100</attribute>
    </xpath>
  </data>
  <data>
    <xpath position="attributes" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']//td[@name='td_note_line']" meta-name="td_note_line" meta-colspan="99">
      <attribute name="colspan">100</attribute>
    </xpath>
  </data>
  <data>
    <xpath position="attributes" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']//td[@name='td_section_subtotal']" meta-name="td_section_subtotal" meta-colspan="99">
      <attribute name="colspan">100</attribute>
    </xpath>
  </data>
  <data>
    <xpath position="after" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']/div/div[10]/p[@id='carrier_description']" meta-t-if="doc.carrier_id.carrier_description" meta-id="carrier_description">
      <xpath position="move" expr="/t[@t-name='sale.report_saleorder_document']//t[@t-call='web.external_layout']/div/div[10]/p[@id='carrier_description']/div" meta-t-out="doc.carrier_id.carrier_description"/>
      <p/>
    </xpath>
  </data>
</data>