fix(rbac): correct constant name in role permissions map

- Fixed typo in DashboardUserRole enum value
- Changed 'DashboardUser-Role.admin' to 'DashboardUserRole.admin'
- This correction ensures proper mapping of admin permissions to the correct role

Author: fulleni

lib/src/rbac/role_permissions.dart

@@ -66,5 +66,5 @@ final Map<Enum, Set<String>> rolePermissions = {
   // Dashboard Roles
   DashboardUserRole.none: {},
   DashboardUserRole.publisher: _dashboardPublisherPermissions,
-  DashboardUser-Role.admin: _dashboardAdminPermissions,
+  DashboardUserRole.admin: _dashboardAdminPermissions,
 };