[BUG] kbcli connect ob cluster error: fail to get the target engine type

[JashBook]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. create cluster

apiVersion: apps.kubeblocks.io/v1alpha1
kind: Cluster
metadata:
  name: obce-qmntco
  namespace: default
  annotations:
    "kubeblocks.io/extra-env": '{"TENANT_NAME":"tenant2","ZONE_COUNT":"1","OB_CLUSTERS_COUNT":"2","TENANT_CPU":"2","TENANT_MEMORY":"2G","TENANT_DISK":"5G"}'
spec:
  terminationPolicy: DoNotTerminate
  componentSpecs:
    - name: ob-ce-0
      componentDefRef: ob-ce
      componentDef: ob-ce-repl
      replicas: 1
      resources:
        requests:
          cpu: 3000m
          memory: 8Gi
        limits:
          cpu: 3000m
          memory: 8Gi
      volumeClaimTemplates:
        - name: data-file
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "50Gi"
        - name: data-log
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "50Gi"
        - name: log
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "10Gi"
        - name: workdir
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "100Mi"
    - name: ob-ce-1
      componentDefRef: ob-ce
      componentDef: ob-ce-repl
      replicas: 1
      resources:
        requests:
          cpu: 3000m
          memory: 8Gi
        limits:
          cpu: 3000m
          memory: 8Gi
      volumeClaimTemplates:
        - name: data-file
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "50Gi"
        - name: data-log
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "50Gi"
        - name: log
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "10Gi"
        - name: workdir
          spec:
            accessModes:
              - ReadWriteOnce
            resources:
              requests:
                storage: "100Mi"

2. See error

kbcli cluster connect obce-qmntco 
error: fail to get the target engine type

kbcli cluster connect  -i obce-qmntco-ob-ce-0-0
error: fail to get the target engine type

Expected behavior
kbcli connect ob cluster success

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• Version [e.g. 22]

Additional context
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[ahjing99]

lower the severity since ob can be connected without kbli