Before this commit, project task kanban quick create does not display the avatar on user_ids due to m2m tags widget. so in this commit, replace the many2many_tags widget with many2many_avatar_user. task-2871552 closes odoo/odoo#102771 X-original-commit: 02226e70f0367033e279e937dc439422ef8956f5 Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>