[FIX] mail: correctly propagate message_post parameters to redirection
[FIX] mail: correctly propagate message_post parameters to redirection

Propagation was not correctly done at 8a026e26c6ae25e3fdb5369a7fa3343d70fab782 . This commit
ensures all parameters are passed to sub-calls when redirection is done
in message_post.

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