CMA failing to create ScaledObject since no username in RHOCP 4

Issue

• When a scaledobject is configured as documented, it's failing with the error:

  2023-07-04T07:32:24.057456740Z 2023-07-04T07:32:24Z    ERROR    Error getting scalers    {"controller": "scaledobject", "controllerGroup": "keda.sh", "controllerKind": "ScaledObject", "ScaledObject": {"name":"example-scaledobject","namespace":"test"}, "namespace": "test", "name": "example-scaledobject", "reconcileID": "22be9633-2537-4c40-8cd7-9b9054799692", "error": "error parsing prometheus metadata: no username given"}