[FIX] l10n_ar: Invoice document type letter

OPW 3117373
Task: 57576
The printed invoice hides part of the document type letter in the header.
This commit solves that problem and also this issue: https://github.com/odoo/odoo/issues/108994

closes odoo/odoo#113603

X-original-commit: 91581e9090d2382ff584c199efcf3b7206ddac66
Signed-off-by: Quentin De Paoli <qdp@odoo.com>
Signed-off-by: Josse Colpaert <jco@odoo.com>

addons/l10n_ar/views/report_invoice.xml

@@ -10,7 +10,7 @@
                 </div>
                 <div name="center-upper" class="col-2 text-center" t-att-style="'color: %s;' % o.company_id.primary_color">
                     <span style="display: inline-block; text-align: center; line-height: 8px;">
-                        <h1 style="line-height: 25px;">
+                        <h1 style="line-height: 35px;">
                             <strong><span t-out="not pre_printed_report and document_letter or '&#160;'"/></strong>
                         </h1>
                         <span style="font-size: x-small;" t-out="not pre_printed_report and document_legend or '&#160;'"/>