newly imported managed cluster not updated to window.SERVER_FLAGS.clusters, the first managed cluster info can be successfully included in window.SERVER_FLAGS.clusters but following new managed clusters will not be included which causes newly imported clusters are not shown in 'All Clusters' dropdown

4.13.0-0.nightly-2023-02-01-112003

Always

1. Enable multi-cluster feature gate
2. Import one managed clusters 'mng1-175232', wait for cluster is joined successfully, refresh console, check cm/managed-clusters, window.SERVER_FLAGS.clusters and window.SERVER_FLAGS.copiedCSVsDisabled
$ oc get managedclusters
NAME            HUB ACCEPTED   MANAGED CLUSTER URLS                                          JOINED   AVAILABLE   AGE
local-cluster   true           https://api.yapei12374.qe.devcluster.openshift.com:6443       True     True        74m
mng1-175232     true           https://api.yapeimg1.qe.azure.devcluster.openshift.com:6443   True     True        19m    True        19m
$ oc get cm managed-clusters -n openshift-console -o yaml
apiVersion: v1
data:
  managed-clusters.yaml: |
    - name: mng1-175232
      apiServer:
        url: https://api.yapeimg1.qe.azure.devcluster.openshift.com:6443
        caFile: /var/managed-cluster-api-server-certs/mng1-175232-managed-cluster-api-server-cert/ca-bundle.crt
      oauth:
        clientID: console-managed-cluster-oauth-client
        clientSecret: 2X10Pzo9TUeWCky08I4F1rHNxst_aHehhyf4-TSFX70
        caFile: /var/managed-cluster-oauth-server-certs/mng1-175232-managed-cluster-oauth-server-cert/ca-bundle.crt
      copiedCSVsDisabled: false

$  > window.SERVER_FLAGS.copiedCSVsDisabled 
< {local-cluster: false, mng1-175232: false} 
$ > window.SERVER_FLAGS.clusters 
< ["local-cluster", "mng1-175232"] (2)

3. Import one more managed cluster 'mng2-175234', wait for cluster is joined successfully, refresh console, check cm/managed-clusters, window.SERVER_FLAGS.clusters and window.SERVER_FLAGS.copiedCSVsDisabled
$ oc get managedclusters                                 
NAME            HUB ACCEPTED   MANAGED CLUSTER URLS                                          JOINED   AVAILABLE   AGE
local-cluster   true           https://api.yapei12374.qe.devcluster.openshift.com:6443       True     True        81m
mng1-175232     true           https://api.yapeimg1.qe.azure.devcluster.openshift.com:6443   True     True        25m
mng2-175234     true           https://api.yapeimg2.qe.gcp.devcluster.openshift.com:6443     True     True        19m
$ oc get cm managed-clusters -n openshift-console -o yaml
apiVersion: v1
data:
  managed-clusters.yaml: |
    - name: mng1-175232
      apiServer:
        url: https://api.yapeimg1.qe.azure.devcluster.openshift.com:6443
        caFile: /var/managed-cluster-api-server-certs/mng1-175232-managed-cluster-api-server-cert/ca-bundle.crt
      oauth:
        clientID: console-managed-cluster-oauth-client
        clientSecret: 2X10Pzo9TUeWCky08I4F1rHNxst_aHehhyf4-TSFX70
        caFile: /var/managed-cluster-oauth-server-certs/mng1-175232-managed-cluster-oauth-server-cert/ca-bundle.crt
      copiedCSVsDisabled: false
    - name: mng2-175234
      apiServer:
        url: https://api.yapeimg2.qe.gcp.devcluster.openshift.com:6443
        caFile: /var/managed-cluster-api-server-certs/mng2-175234-managed-cluster-api-server-cert/ca-bundle.crt
      oauth:
        clientID: console-managed-cluster-oauth-client
        clientSecret: 2X10Pzo9TUeWCky08I4F1rHNxst_aHehhyf4-TSFX70
        caFile: /var/managed-cluster-oauth-server-certs/mng2-175234-managed-cluster-oauth-server-cert/ca-bundle.crt
      copiedCSVsDisabled: false
kind: ConfigMap
$  > window.SERVER_FLAGS.copiedCSVsDisabled
< {local-cluster: false, mng1-175232: false}
$ > window.SERVER_FLAGS.clusters
< ["local-cluster", "mng1-175232"] (2)

From step3 result, we can see the newly imported managed cluster data is successfully written in cm/managed-clusters, and the cluster has been joined about 19minutes ago, however the newly added managed cluster still doesn't appear in 'All Clusters' dropdown, and window.SERVER_FLAGS.clusters values are not updated to include new managed clusters

managed clusters newly imported should be synced timely and shown up in 'All Clusters' dropdown