[release-1.13] Rollback unnecessary deepcopy in snapshot

[volcano-sh-bot]

This is an automated cherry-pick of #5177

None

[gemini-code-assist]

Code Review

This pull request replaces deep copies with shallow copies for Pod and Node objects within the Clone methods of TaskInfo and NodeInfo. While this change likely aims to improve performance, a significant issue was identified in TaskInfo.Clone: removing the deep copy of the Pod object introduces potential data races and side effects on the scheduler cache, as the Pod object is modified in other methods such as SetPodResourceDecision.

[JesseStutler]

/approve
/lgtm

[volcano-sh-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: JesseStutler
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