[FIX] mail: chatter: hide basic composer when opening full composer
[FIX] mail: chatter: hide basic composer when opening full composer

opw 670388

stephen144/odoo,sysadminmatmoz/OCB,bplancher/odoo,storm-computers/odoo,ygol/odoo,bplancher/odoo,laslabs/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,microcom/odoo,Elico-Corp/odoo_OCB,storm-computers/odoo,bplancher/odoo,bplancher/odoo,stephen144/odoo,laslabs/odoo,laslabs/odoo,sysadminmatmoz/OCB,dfang/odoo,stephen144/odoo,ygol/odoo,microcom/odoo,dfang/odoo,ygol/odoo,sysadminmatmoz/OCB,storm-computers/odoo,ygol/odoo,storm-computers/odoo,microcom/odoo,laslabs/odoo,hip-odoo/odoo,hip-odoo/odoo,bplancher/odoo,microcom/odoo,dfang/odoo,ygol/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,microcom/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,stephen144/odoo,Elico-Corp/odoo_OCB,dfang/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,hip-odoo/odoo,microcom/odoo,laslabs/odoo,bplancher/odoo,stephen144/odoo,ygol/odoo,storm-computers/odoo,storm-computers/odoo,ygol/odoo,laslabs/odoo,sysadminmatmoz/OCB,stephen144/odoo,dfang/odoo