Description of problem:
When a migration plan has a PVC conflict, the "Stage" and "Cutover" options should be disabled, but they are not.


Version-Release number of selected component (if applicable):
SOURCE CLUSTER: AWS OCP 3.11 (MTC 1.5.1) NFS
TARGET CLUSTER: AWS OCP 4.9 (MTC 1.6.0) OCS4

How reproducible:
Always

Steps to Reproduce:
1. Create an namespace with a pvc and a pod mounting the pvc

$ oc new-project ocp-44516-statewarning-ns

$ cat <<EOF | oc create -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  namespace: ocp-44516-statewarning-ns
  name: test-data
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
EOF

$ cat <<EOF | oc create -f -
apiVersion:  apps/v1
kind: Deployment
metadata:
  labels:
    app: state-warning-test
  name: state-warning-test
  namespace: ocp-44516-statewarning-ns
spec:
  replicas:  1
  selector:
    matchLabels:
      app: resize-test
  template:
    metadata:
      labels:
        app: resize-test
    spec:
      containers:
      - name: podtest
        imagePullPolicy: Always
        image: quay.io/openshifttest/alpine
        command: [ "/bin/sh", "-c", "--" ]
        args:
        - while true; do sleep 30; done;
        restartPolicy: Never
        volumeMounts:
        - name: testvolume
          mountPath: /data/test
      volumes:
      - name: testvolume
        persistentVolumeClaim:
          claimName: test-data
EOF


2. Create an intra-cluster migration plan.

From source cluster to source cluster, no namespaces mapping.


Actual results:

The migplan is reporting the conflic

 - category: Warn
    lastTransitionTime: "2021-09-07T12:05:14Z"
    message: Source PVCs [ocp-44516-statewarning-ns/test-data] are mapped to destination PVCs which result in conflicts. Please map each source PVC to a distinct destination PVC before running a State Migration.
    reason: NotDistinct
    status: "True"
    type: PvNameConflict

But in the UI the kebab options "Stage" and "Cutover" are not disabled.

Expected results:
The "Stage" and "Cutover" options in the kebab should be disabled.

Additional info: