[2.0] InfluxDB notification rule doesn't send Slack message on status change

I have the check applied and the notification rule set from ANY to ANY. But still I don't get any notification on slack channel.
I see in Alert History the LEVEL is changing from OK to WARN and vice versa, that should trigger the notification as per the notification rule, but it doesn't.

My check is schedule every 5m with offset of 2s
My notification rule is scheduled at every 5min with offset 5s

@mildebrandt any idea, how this can be solved? I see you have got this resolved.

my influx versions are:-

InfluxDB v2.4.0
Server: [de247ba](https://github.com/influxdata/influxdb/tree/de247bab08)
Frontend: [a2bd1f3](https://github.com/influxdata/ui/tree/a2bd1f3)

Expected behavior:
A slack notification to be sent when the state changes.

Actual behavior:
No notification happens.

https://github.com/influxdata/influxdb/issues/17809

Start by reviewing the related issue 17809 and reproducing the report with the stated check and notification schedules on InfluxDB v2.4.0. Trace the notification-rule handling for OK-to-WARN and WARN-to-OK transitions. Done means a configured Slack notification is sent when the check state changes.

Written by the indexing model from the issue text.