[FIX] im_livechat: performance issue: slow to open dashboard of livechat channels
[FIX] im_livechat: performance issue: slow to open dashboard of livechat channels

closes odoo/odoo#39154

X-original-commit: 6a08db92769da82023d25d04072027f8a54659b8
Signed-off-by: Nicolas Martinelli (nim) <771435c469f83f6aa9c405ac5e1ed06314a94f2d@odoo.com>

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