[FIX] website_slides: reflect ACLs on fields for channel members
[FIX] website_slides: reflect ACLs on fields for channel members

Just reflect access rights: publishers should be able to manage channel
members.

Co-Authored-By: Aurélien Warnon <awa@odoo.com>
Co-Authored-By: Thibault Delavallée <tde@odoo.com>

closes odoo/odoo#30960
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo