sensor cleanup function

[garadar]

context

(cluster)-[xxx@auto ~]$ cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)
(cluster)-[xxx@auto ~]$ uname -r 
3.10.0-1160.76.1.el7.x86_64
(cluster)-[xxx@auto ~]$  st2 --version
st2 3.7.0, on Python 3.6.8

Issue

Sensor
I'm using a flask server to listen my events and when I turn off st2 or disable the sensor, the function cleanup is never called.

The cleanup function is called when there is an issue with stackstorm main entity.

Do you have an idea ?