Describe the bug

hello,

i'm currently installing ESO in a Namespace scope Cluster, where i can only reach non Cluster Resources
, but it seems , that ClusterGenerator is not correctly handled like other Cluster Ressource when i'm in ScopedRBAC

To Reproduce
Steps to reproduce the behavior:

1. provide all relevant manifests

# values.yaml
scopedRBAC: true

2. provide the Kubernetes and ESO version

version chart: 0.18.0 & latest
Expected behavior

should not included ClusterGenerator in RBAC,when scopeRBAC

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
How do you want to handle this case ?
i can provide a PR