[FIX] mail: correctly propagate parameters when re-calling message_post
[FIX] mail: correctly propagate parameters when re-calling message_post

A new notif_layout parameter has been introduced at 304e6cf90b9ef969c809030b3e65ac6b667eea0e. However it is
not correctly propagated to sub-calls when redirecting message_post
using context and sub-model.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo