skipped adding usage when there is no leaf domain available

[swastik959]

What type of PR is this?

/kind bug

What this PR does / why we need it:

this pr adds a skip step if there is no leaf domain available so that panic is not thrown when a not is deleted and a new workload is scheduled

Which issue(s) this PR fixes:

Fixes #3693

Special notes for your reviewer:

Does this PR introduce a user-facing change?

[k8s-ci-robot]

Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: swastik959
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[k8s-ci-robot]

Hi @swastik959. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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