e2e is not stable

[clyang82]

error in sh ./test/script/e2e_run.sh -f "e2e-test-prune" -v 6

 E0304 10:37:23.425802  169671 suite_test.go:194] get managedcluster error:<nil>
SSSSSSSSSSSS
------------------------------
• [FAILED] [180.045 seconds]
Delete the multiclusterglobalhub and prune resources [It] create application [e2e-test-prune, e2e-test-global-resource]
/tmp/multicluster-global-hub/test/e2e/prune_test.go:40
  Timeline >>
  STEP: Add app label to the managedcluster1 @ 03/04/25 10:37:23.445
  STEP: Check the label is added @ 03/04/25 10:37:23.445
  [FAILED] in [It] - /tmp/multicluster-global-hub/test/e2e/cluster_test.go:310 @ 03/04/25 10:40:23.471
  << Timeline
  [FAILED] Timed out after 180.000s.
  Unexpected error:
      <*errors.errorString | 0xc000f5f0e0>: 
      failed to add label [app: test] to cluster hub1-cluster1
      {
          s: "failed to add label [app: test] to cluster hub1-cluster1",
      }
  occurred
  In [It] at: /tmp/multicluster-global-hub/test/e2e/cluster_test.go:310 @ 03/04/25 10:40:23.471 

[clyang82]

it happens in the following PRs:
#1438
#1432
#1435