[BUG]scale-in is always running after scale-out of pulsar cluster

[tianyue86]

Describe the env
Kubernetes: v1.31.1-aliyun.1
KubeBlocks: 1.0.0-beta.21
kbcli: 1.0.0-beta.8

To Reproduce
Steps to reproduce the behavior:

1. Use the yaml below to create pulsar cluster
   puls.yaml.txt
2. scale-out: succeed

kbcli cluster scale-out pulsar-kcekhn --auto-approve --force=true --components bookies --replicas 5 --namespace default
OpsRequest pulsar-kcekhn-horizontalscaling-5drlj created successfully, you can view the progress:
	kbcli cluster describe-ops pulsar-kcekhn-horizontalscaling-5drlj -n default

kbcli cluster list-ops pulsar-kcekhn --status all  --namespace default     
NAME                                    NAMESPACE   TYPE                CLUSTER         COMPONENT   STATUS    PROGRESS   CREATED-TIME                 
pulsar-kcekhn-horizontalscaling-5drlj   default     HorizontalScaling   pulsar-kcekhn   bookies     Succeed   5/5        Dec 27,2024 16:59 UTC+0800

3. Scale-in：always in running status

kbcli cluster scale-in pulsar-kcekhn --auto-approve --force=true --components bookies --replicas 3 --namespace default
OpsRequest pulsar-kcekhn-horizontalscaling-8mlhm created successfully, you can view the progress:
	kbcli cluster describe-ops pulsar-kcekhn-horizontalscaling-8mlhm -n default


kbcli cluster list-ops pulsar-kcekhn --status all  --namespace default
NAME                                    NAMESPACE   TYPE                CLUSTER         COMPONENT   STATUS    PROGRESS   CREATED-TIME                 
pulsar-kcekhn-horizontalscaling-5drlj   default     HorizontalScaling   pulsar-kcekhn   bookies     Succeed   5/5        Dec 27,2024 16:59 UTC+0800   
pulsar-kcekhn-horizontalscaling-8mlhm   default     HorizontalScaling   pulsar-kcekhn   bookies     Running   0/3        Dec 27,2024 17:09 UTC+0800

===> it takes more than 30 minutes, but the ops status is still running

4. describe ops

Events:
  Type    Reason                    Age                From                    Message
  ----    ------                    ----               ----                    -------
  Normal  WaitForProgressing        10m                ops-request-controller  wait for the controller to process the OpsRequest: pulsar-kcekhn-horizontalscaling-8mlhm in Cluster: pulsar-kcekhn
  Normal  ValidateOpsRequestPassed  10m (x2 over 10m)  ops-request-controller  OpsRequest: pulsar-kcekhn-horizontalscaling-8mlhm is validated
  Normal  HorizontalScalingStarted  10m (x2 over 10m)  ops-request-controller  Start to horizontal scale replicas in Cluster: pulsar-kcekhn

5. logs for reference
   report-cluster-pulsar-kcekhn-2024-12-27-17-45-12.zip.txt

Expected behavior
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[shanshanying]

Seems Scaled in blocked by memberLeave actions (check kb-agent log)