Unhandled resolutionrequests in conversion Webhook

[JeromeJu]

The following error persists in the conversion webhook. Related to #5515

{"severity":"error","timestamp":"2022-10-11T14:11:13.433Z","logger":"tekton-pipelines-webhook.ConversionWebhook",
"caller":"controller/controller.go:566","message":"Reconcile error","commit":"e9e4cd6-dirty","knative.dev/traceid":"9d063b0f-806f-4015-aaea-
a8442d8e0423","knative.dev/key":"resolutionrequests.resolution.tekton.dev","duration":0.000091604,"error":"custom resource \"resolutionrequests.resolution.tekton.dev\" isn't configured for webhook 
conversion","stacktrace":"knative.dev/pkg/controller.(*Impl).handleErr\n\tknative.dev/pkg@v0.0.0-20220818004048-4a03844c0b15/controller/controller.go:566\nknative.dev/pkg/controller.
(*Impl).processNextWorkItem\n\tknative.dev/pkg@v0.0.0-20220818004048-4a03844c0b15/controller/controller.go:543\nknative.dev/pkg/controller.(*Impl).RunContext.func3\n\tknative.dev/pkg@v0.0.0-20220818004048-4a03844c0b15/controller/controller.go:491"}

cc @abayer

Originally posted by @JeromeJu in #5625 (comment)

[vdemeester]

/kind bug

[tekton-robot]

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Mark the issue as fresh with /remove-lifecycle stale with a justification.
Stale issues rot after an additional 30d of inactivity and eventually close.
If this issue is safe to close now please do so with /close with a justification.
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/lifecycle stale

Send feedback to tektoncd/plumbing.

[tekton-robot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten with a justification.
Rotten issues close after an additional 30d of inactivity.
If this issue is safe to close now please do so with /close with a justification.
If this issue should be exempted, mark the issue as frozen with /lifecycle frozen with a justification.

/lifecycle rotten

Send feedback to tektoncd/plumbing.

[abayer]

This got fixed a while ago, though there are still conversion issues - see #6075