fix: Fix webhook owner reference causing ArgoCD leak

[jonathan-innis]

Fixes #N/A

Description

This change ensures that:

1. Knative doesn't add ownerReferences to webhook configurations that it creates by adding DisableNamespaceOwnership to the webhook.Options
2. We remove old OwnerReferences that were already added by Knative onto the webhook configuration resources by patching out the namespace ownership that was added by Knative

How was this change tested?

make presubmit

• Ran this on an ArgoCD cluster where we started on v0.37.3, upgraded to this version and then upgraded to v1.0.3. This removed the webhook configurations and I validated that we removed the ownerReferences on this version

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

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
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[jonathan-innis]

/hold Wait for patch releases to complete before merging

[njtran]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jonathan-innis, njtran

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[jonathan-innis]

/unhold @njtran and @jmdeal have both looked and think the code looks good

[jonathan-innis]

/unhold