Update/Delete is not working on namespaceAnnotations/namespaceLabels as targetCustomizations

[sbulage]

Below Steps Performed

• Below GitRepo used to reproduce this issue.
• Created a GitRepo using fleet.yaml which contains namespaceLabels and namespaceAnnotations present under targetCustomization.
• Waited for application to be created in the specified cluster(targetCustomized).
• Observed that resources are created under the custom namespace mentioned in the targetCustomization.
• Later saw that namespaceLabels and namespaceAnnotations are also added to newly created namespace.
• Update or Delete operation on either namespaceLabel or namespaceAnnotations or both, it will not reflect on target customized namespace.

GitRepo Used

apiVersion: fleet.cattle.io/v1alpha1
kind: GitRepo
metadata:
  name: test-ns-annot
  namespace: fleet-default
spec:
  branch: main
  paths:
    - target-customization
  repo: https://github.com/sbulage/test-fleet
  targets:
    - clusterName: imported-0

Screenshot showing namespaceLables/namespaceAnnotation

Originally posted by @sbulage in #2441 (comment)