Email notification layouts in Helpdesk and Salary Contract workflows were updated to align with the newer notification system. This keeps customer and employee communications consistent with the standard Odoo email design and reduces maintenance risk.

Purpose: move notification from jinja-based mail.template to qweb templates

Task: https://www.odoo.com/web#id=49267&view_type=form&model=project.task&action=333&active_id=965&menu_id=4720