[FIX] sale: long product description

- Create a product with a very long product description
- Add in a SO and print the quotation

The description overlaps with the table header on the second page.

This is a known issue of wkhtmltopdf (see issues 1770 and 1524 for
example), and there is no known workaround. It can be avoided by
preventing the repetition of the header.

closes odoo/odoo#53990

X-original-commit: f54c73f9a42476e1f0d2de1904644f317ee1dffb
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/sale/report/sale_report_templates.xml

@@ -64,7 +64,8 @@
             <t t-set="display_discount" t-value="any([l.discount for l in doc.order_line])"/>
 
             <table class="table table-sm o_main_table">
-                <thead>
+                <!-- In case we want to repeat the header, remove "display: table-row-group" -->
+                <thead style="display: table-row-group">
                     <tr>
                         <th name="th_description" class="text-left">Description</th>
                         <th name="th_quantity" class="text-right">Quantity</th>