psmdb-operator helm chart deletes watchNamespace on uninstall

Context

We deployed psmdb-operator using the helm chart with the following command:

helm install psmdb-operatorpercona/psmdb-operator -n operators --set watchNamespace <our-existing-namespace-with-lots-of-apps-deployed>

 
We were expecting this command to allow us to manage MongoDB deployments in a different namespace using the operator installed to the operators namespace. This didn't seem to work because the rbac config seems to be broken, but that will probably be addressed by K8SPSMDB-203.
 
We then intended to remove the operator from the operators namespace and move it to <our-existing-namespace-with-lots-of-apps-deployed>.
 
Expected behavior
The helm release should've been deleted without touching anything else.
 
Actual behavior
<our-existing-namespace-with-lots-of-apps-deployed> was deleted along with the helm release because of this resource