investigate charts on the monitoring dashboard missing data
follow up on: https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/9877#note_334672627
some charts on this dashboard: https://dashboards.gitlab.net/d/monitoring-main/monitoring-overview?orgId=1&from=now-6h%2Fm&to=now%2Fm&var-PROMETHEUS_DS=Global&var-environment=gprd&var-stage=main&var-sigma=2 show no data errors