fix: add deletiontimestamp check for kwok termination

[njtran]

Fixes #N/A

Description
Karpenter now waits for the nodeclaim to be not found with the cloudprovider.Get() call, which this implements the fix for the kwok cloud provider

How was this change tested?
make apply

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: njtran

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [njtran]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[coveralls]

Pull Request Test Coverage Report for Build 9522926993

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.03%) to 81.297%

---

Files with Coverage Reduction	New Missed Lines	%
pkg/controllers/disruption/drift.go	2	89.29%
pkg/controllers/node/termination/terminator/eviction.go	2	89.09%

Totals
Change from base Build 9492890501:	0.03%
Covered Lines:	8302
Relevant Lines:	10212

---

💛 - Coveralls

[jmdeal]

/lgtm