Flaky Test: Pod groups when Single CQ should allow to preempt the lower priority group

[tenzen-y]

What happened:
Flaky on "End To End Suite: kindest/node:v1.31.0: [It] Pod groups when Single CQ should allow to preempt the lower priority group"

{Timed out after 5.000s.
The function passed to Eventually failed at /home/prow/go/src/kubernetes-sigs/kueue/test/e2e/singlecluster/pod_test.go:505 with:
Error matcher expects an error.  Got:
    <nil>: nil failed [FAILED] Timed out after 5.000s.
The function passed to Eventually failed at /home/prow/go/src/kubernetes-sigs/kueue/test/e2e/singlecluster/pod_test.go:505 with:
Error matcher expects an error.  Got:
    <nil>: nil
In [It] at: /home/prow/go/src/kubernetes-sigs/kueue/test/e2e/singlecluster/pod_test.go:507 @ 12/30/24 19:35:24.733
}

What you expected to happen:
No errors.

How to reproduce it (as minimally and precisely as possible):

https://prow.k8s.io/view/gs/kubernetes-ci-logs/logs/periodic-kueue-test-e2e-main-1-31/1873812786023239680

Anything else we need to know?:

Environment:

• Kubernetes version (use kubectl version):
• Kueue version (use git describe --tags --dirty --always):
• Cloud provider or hardware configuration:
• OS (e.g: cat /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[tenzen-y]

/kind flake