Automatic merge from submit-queue
Fix kube-apiserver crash when patching TPR data
**What this PR does / why we need it**: While trying to do a strategic merge patch, kube-apiserver crashes with a nil pointer dereference because `UnsafeConvertor` is `nil` for TPR data resources here: https://github.com/kubernetes/kubernetes/blob/master/pkg/master/thirdparty/thirdparty.go#L314-L337.
This PR does not make strategic merge patch work on TPR data but makes sure that the kube-api server does not crash while trying to do so.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#44587
**Special notes for your reviewer**:
**Release note**:
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NONE
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