[FIX] web: fix invoice preview

Before this commit, the `report_invoice_wizard_preview` was rendered well in
html and in the preview (settings page) but not when downloading it ; the
"total" table was pushed all the way to the right.

opw-3648586

closes odoo/odoo#149509

X-original-commit: 232c257c1554f2f47b589a971cdf9f98227ef53c
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>
Signed-off-by: Adrien Milis (miad) <miad@odoo.com>

addons/web/views/report_templates.xml

@@ -189,7 +189,7 @@
                        </table>
                        <div class="clearfix">
                            <div class="row">
-                               <div class="col-md-6">
+                               <div class="col-6">
                                    <p name="payment_term">
                                        <span>Payment terms: 30 Days</span>
                                    </p>
@@ -197,7 +197,7 @@
                                        Payment Communication: <b><span>INV/2023/00003</span></b>
                                    </p>
                                </div>
-                               <div id="total" class="col-md-6">
+                               <div id="total" class="col-6">
                                    <table class="table table-sm table-borderless" style="page-break-inside: avoid; position:relative;">
                                        <tbody><tr class="border-black o_subtotal" style="">
                                            <td><strong>Untaxed Amount</strong></td>