CustomRuns do not include labels when creating resources

[ggallen]

Expected Behavior

Labels included in a CustomRun should remain in the created resource.

Actual Behavior

Labels are stripped.

Steps to Reproduce the Problem

1. Use the following resource or something similar:

apiVersion: tekton.dev/v1beta1
kind: CustomRun
metadata:
  generateName: agogos-submission-component-cli-custom-run-
  namespace: gallen
  labels:
    app.kubernetes.io/component: customrun
    app.kubernetes.io/part-of: agogos
spec:
  customSpec:
    apiVersion: agogos.redhat.com/v1alpha1
    kind: Submission
    metadata: {}
    spec:
      instance: 344d24db-b72d-4bd9-a2d1-a14d5e419fb6
      name: sample-1
      resource: Component
  serviceAccountName: default

2. Use 'kubectl create -f` to create the resource.
3. Verify there are no labels in the created resource.

apiVersion: tekton.dev/v1beta1
kind: CustomRun
metadata:
  creationTimestamp: "2024-02-06T00:01:24Z"
  generateName: agogos-submission-component-cli-custom-run-
  generation: 1
  name: agogos-submission-component-cli-custom-run-vgcmk
  namespace: gallen
  resourceVersion: "151578"
  uid: e563d640-d797-43a9-a822-5387999edb0a
spec:
  customSpec:
    apiVersion: agogos.redhat.com/v1alpha1
    kind: Submission
    metadata: {}
    spec:
      instance: 344d24db-b72d-4bd9-a2d1-a14d5e419fb6
      name: sample-1
      resource: Component
  serviceAccountName: default

Additional Info

• Kubernetes version:

  Output of kubectl version:

Client Version: version.Info{Major:"1", Minor:"27", GitVersion:"v1.27.10", GitCommit:"0fa26aea1d5c21516b0d96fea95a77d8d429912e", GitTreeState:"clean", BuildDate:"2024-01-17T13:46:28Z", GoVersion:"go1.20.13", Compiler:"gc", Platform:"linux/amd64"}
Kustomize Version: v5.0.1
Server Version: version.Info{Major:"1", Minor:"27", GitVersion:"v1.27.10", GitCommit:"0fa26aea1d5c21516b0d96fea95a77d8d429912e", GitTreeState:"clean", BuildDate:"2024-01-17T13:38:41Z", GoVersion:"go1.20.13", Compiler:"gc", Platform:"linux/amd64"}

• Tekton Pipeline version:

  v0.53.3