Title: Hide or Gray-Out Non-Accessible Namespaces in Web Console Namespace Selector

Summary of Observed Behavior:
A user with view permissions limited to a single namespace:

1. Logs into the web console.

1. In Developer view, sees only the permitted namespace (correct behavior).

1. In Administrator view, sees all namespaces in the dropdown, but receives an access error when switching to a namespace they don’t have rights to.

   is forbidden; User "<username>"  cannot list resources pods in API group "" at the cluster scope"  

1. This is technically correct based on RBAC, but leads to confusion because the UI implies broader access than actually granted.

RFE Request:

Enhance the OpenShift Web Console to improve RBAC-aware namespace visibility. Specifically:

• Do not display namespaces for which the logged-in user has no permissions OR

• Display such namespaces in a disabled (grayed-out) state, preventing selection.

This change will provide clarity regarding access rights, reduce user confusion, and minimize related support incidents.

Business Use Case:
Many customers assign limited, namespace-specific access to users in OpenShift. However, in the Web Console (particularly in Administrator view), users can still see all namespaces in the namespace dropdown — even those for which they do not have permissions. When such a user selects a namespace they cannot access, the console displays an error.
This often leads to confusion and support cases, as users expect that if they can see a namespace, they should be allowed to access it. The current behavior results in poor user experience and unnecessary troubleshooting overhead.