refactor(adminui): explicit ClaimTypes.Role footer filter; fix stale NavSidebar comment

src/Server/ZB.MOM.WW.OtOpcUa.Host/Program.cs

@@ -147,7 +147,7 @@ if (hasAdmin)
     // registered". Idempotent on fused admin,driver nodes (TryAddEnumerable de-dups).
     builder.Services.AddOtOpcUaDriverProbes();
     // Flow AuthenticationState through cascading parameters so <AuthorizeView/> works
-    // inside interactive components (NavSidebar's session block).
+    // in the static MainLayout footer and other components (e.g. Account.razor, Routes.razor).
     builder.Services.AddCascadingAuthenticationState();
     builder.Services.AddSignalR();
     builder.Services.AddOtOpcUaAdminClients();