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Use `Int32Ptr` function from utils instead of self-written versions
**What this PR does / why we need it**:
Replaces instances of newInt{,32} with `Int32Ptr` function from `k8s.io/kubernetes/pkg/util/pointer`
**Which issue(s) this PR fixes**:
Fixes#59971
**Release note**:
```release-note
NONE
```
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