[FIX] bus, mail: fix im_status for archived partners

Before this commit, archived and deleted partners had not their
im_status being updated automatically. There were some issues
with this, notably:

- odoobot 'bot' status was not displayed in chatter
- im_status of partners becoming archived were not updated.

This commit fixes both issues.

task-2329591

closes odoo/odoo#60398

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>