[FIX] l10n_din5008: correctly print invoice without headers

Steps to reproduce
------------------
* install `l10n_ch_reports`
* switch to a Swiss company
* enable "QR Codes" in Settings > Accounting > Customer Payments
* create and confirm two invoices for a Swiss partner
* on the invoice list view, select and attempt to print the two invoices
  at once

You should be met with traceback.

opw-3697569

closes odoo/odoo#154063

X-original-commit: b6cb6b3ecd80d8c919790cc3178dfcb62f6f49fb
Signed-off-by: Habib Ayob (ayh) <ayh@odoo.com>
Signed-off-by: Séna Serge Nshimiyimana (sesn) <sesn@odoo.com>

addons/l10n_din5008/report/din5008_report.xml

@@ -46,9 +46,8 @@
                 <div t-attf-class="din_page invoice_note article o_company_#{company.id}_layout {{'o_report_layout_background' if company.layout_background in ['Geometric', 'Custom']  else  ''}} #{'din_page_pdf' if report_type == 'pdf' else ''}"
                      t-attf-style="background-image: url({{ 'data:image/png;base64,%s' % company.layout_background_image.decode('utf-8') if company.layout_background_image and company.layout_background == 'Custom' else '/base/static/img/bg_background_template.jpg' if company.layout_background == 'Geometric' else ''}});"
                      t-att-data-oe-model="o and o._name"
-                     t-att-data-oe-id="o and o.id"
-                     t-if="not skip_headers">
-                    <table class="din_company_info table-borderless">
+                     t-att-data-oe-id="o and o.id">
+                    <table class="din_company_info table-borderless" t-if="not skip_headers">
                         <tr>
                             <td>
                                 <div class="address">
@@ -105,7 +104,7 @@
                             </tr>
                         </div>
                     </table>
-                    <h2>
+                    <h2 t-if="not skip_headers">
                         <span t-if="not o and not docs"><t t-out="company.l10n_din5008_document_title"/></span>
                         <span t-else="">
                             <t t-set="o" t-value="docs[0]" t-if="not o" />