The UpdateProductNotices method runs in a separate goroutine
which modifies a global structure called noticesCache.
This creates race condition when one test finishes
but the goroutine hasn't finished running.
To fix this, we simply prevent the spawning of the goroutine
by disabling the feature in the config.
Ideally, we'd not have global state in the first place.
But that's a separate matter.
https://mattermost.atlassian.net/browse/MM-52646
```release-note
NONE
```
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