fix getnericPLEG still return an empty podIP when get podIP from older cached status

[gaorong]

What type of PR is this?
/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #82276

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

Hi @gaorong. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: gaorong
To complete the pull request process, please assign vishh
You can assign the PR to them by writing /assign @vishh in a comment when ready.

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[matthyx]

/ok-to-test

[matthyx]

/cc

[matthyx]

@gaorong can you add a test that covers this particular case? It should fail without your fix to avoid regression in the future. Thanks!

[gaorong]

can you add a test that covers this particular case? It should fail without your fix to avoid regression in the future. Thanks!

Done, have added test case.

[matthyx]

/lgtm
/assign @vishh

[fejta-bot]

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/lifecycle stale

[k8s-ci-robot]

@gaorong: PR needs rebase.

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/lifecycle rotten

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[k8s-ci-robot]

@fejta-bot: Closed this PR.

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