Prometheus operator shows "it accesses file system via bearer token file which Prometheus specification prohibits" warning in RHOCP 4

Issue

• Prometheus cannot scrape metrics from some platform namespaces.

• Prometheus operator shows the following warning repeatedly:

  2022-02-02T06:28:19.670850525Z level=warn ts=2022-02-02T06:28:19.670751821Z caller=operator.go:1753 component=prometheusoperator msg="skipping servicemonitor" error="it accesses file system via bearer token file which Prometheus specification prohibits" servicemonitor=openshift-compliance/metrics namespace=openshift-user-workload-monitoring prometheus=user-workload