Automated cherry pick of #3991: [StatefulSet] Allow to change replicas without queue-name.

[mbobrovskyi]

Cherry pick of #3991 on release-0.9.

#3991: [StatefulSet] Allow to change replicas without queue-name.

For details on the cherry pick process, see the cherry pick requests page.

Fix the bug that prevented scaling StatefulSets which aren't managed by Kueue when the "statefulset" integration is enabled.

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[mbobrovskyi]

/assign @mimowo

[mbobrovskyi]

/uncc @trasc

[mimowo]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 03b7ef0ea6c2115291e2819537762c00ff29e861

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mbobrovskyi, mimowo

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[mimowo]

/kind bug