Before this PR, the current user was not considered has a follower, regarding
the mention suggestions.
This lead him to be lower than other entries.
This PR fix the issue by adding him back to the follower list.
Task-3531111
closesodoo/odoo#137583
X-original-commit: 50a785fedc5b5c7fd826548e52385bdf458c97a2
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
Signed-off-by: Didier Debondt (did) <did@odoo.com>