[FIX] snailmail: Fix name not appearing on snailmail cover

closes odoo/odoo#104556

X-original-commit: 1d35394f260e5ffa9fc6af834e9c429909ab29ae
Signed-off-by: Louis Baudoux (lba) <lba@odoo.com>
Signed-off-by: Solan Delvenne (sode) <sode@odoo.com>

addons/snailmail/models/snailmail_letter.py

@@ -440,7 +440,7 @@ class SnailmailLetter(models.Model):
         return all(record[key] for key in required_keys)
 
     def _append_cover_page(self, invoice_bin: bytes):
-        address = self.partner_id.contact_address.replace('\n', '<br/>')
+        address = self.partner_id.with_context(show_address=True)._get_name().replace('\n', '<br/>')
         address_x = 118 * mm
         address_y = 60 * mm
         frame_width = 85.5 * mm