[REF] crm, hr_recruitment, project, sales_team: replace member_ids, now merged with message_follower_ids

Task: https://www.odoo.com/web#id=8544&view_type=form&model=project.task&action=333&active_id=131
Pad: https://pad.odoo.com/p/r.lsWeyXtbq94wHIXr