ignore PrometheusRule for driftDetection

General MR

Summary

ignore PrometheusRule for driftDetection

Fixes issues with driftDetection causing warning/correction with monitoring.

Relevant logs/screenshots

Prior to fix

$ kubectl -n flux-system logs helm-controller-5cd55644dc-qvjgr | grep "drift"  | grep monitoring
{"level":"info","ts":"2025-06-09T18:17:14.151Z","msg":"running 'correct cluster drift' action with timeout of 20m0s","controller":"helmrelease","controllerGroup":"helm.toolkit.fluxcd.io","controllerKind":"HelmRelease","HelmRelease":{"name":"monitoring","namespace":"bigbang"},"namespace":"bigbang","name":"monitoring","reconcileID":"2fca746c-6c00-4fbc-8111-e27c98b78e80"}

After fix applied ( no results ... good )

$ kubectl -n flux-system logs helm-controller-5cd55644dc-8l9rq | grep "drift"  | grep monitoring

Linked Issue

n/a

Upgrade Notices

n/a