[WIP]: Deprecate Reorder Flag in Favour of Field

[cailyn-codes]

Addresses: #3947

#4019 made kustomize's ordering of resources customizable from the kustomization.yaml file. We can now safely deprecate the reorder flag.

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
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[cailyn-codes]

/test all

[k8s-ci-robot]

@cailynse: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
kustomize-presubmit-master	fe195a3	link	true	/test kustomize-presubmit-master

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[cailyn-codes]

This was included in the addition of the sortOptions field