We are introducing a new aggregation stage called `$listClusterCatalog` that must support multitenancy, that is:

• Every namespace returned must be prefixed with the proper tenant id.
• Every database returned must be prefixed with the proper tenant id.
• The aggregation stage should only return those collections belonging to the tenant id provided on the request.

The `$listClusterCatalog` calls `$_internalListCollections` under the hood, which is the one in charge of fetching and processing all the collections that `$listClusterCatalog` will end up returning to the user.

Note: even though the tenant id protocol will be soon ripped out under SPM-3963, we still need to support multitenancy to be able to backport the `$listClusterCatalog` to v8.0.