fix(operator): use /var/lib/loki as default storage paths (#7748)

Author: ankitshokeen

operator/internal/manifests/var.go

@@ -51,7 +51,8 @@ const (
 
 	walDirectory  = "/var/lib/loki/wal"
 	dataDirectory = "/var/lib/loki"
-	// rulesStorageDirectory is the persistent storage path for rules, aligned with production Helm configs.
+	// rulesStorageDirectory is the persistent storage path for rules.
+	// It aligns with the default used by the official Helm chart.
 	rulesStorageDirectory = "/var/lib/loki/rules"
 
 	rulerContainerName = "loki-ruler"