How to stop scaling runners if already some free runners are available

[roshvin]

we are using below HRA conf. even if we have free runners , some time it scale up to 50 and lots of free runners will be available .

how we can check and stop scaling if there is already free runners available.

apiVersion: actions.summerwind.dev/v1alpha1
kind: HorizontalRunnerAutoscaler
metadata:
   name: ent-runner-auto-scaller
spec:
  scaleDownDelaySecondsAfterScaleOut: 5
  scaleTargetRef:
    name: dot-free-runner
    kind: RunnerSet
  minReplicas: 1
  maxReplicas: 50
  scaleUpTriggers:
  - githubEvent:
      workflowJob: {}
    duration: "30m"