Two updates: 1. Match the ZPL layout, i.e. remove text centering / horizonal lines. 2. Make layout match 4x12 format (same used by Product Labels). Note that unlike the Product Labels, we expect the lot labels to ALWAYS be printed in a 4x12 format (i.e. we keep it simple and contained within 1 template). Task: 2494740 Part-of: odoo/odoo#82389