fix(client): SelectAsync routes to Random instead of AllNodes in cluster mode

[currantw]

Describe the bug

GlideClusterClient.SelectAsync explicitly routes to Route.Random, but glide-core's default routing for SELECT is AllNodes. When switching databases in a cluster, all nodes should update their selected database — not just a random one.

Expected Behavior

SELECT should be sent to all nodes (AllNodes) so the database selection is consistent across the cluster.

Current Behavior

Only a single random node receives the SELECT command, leaving other nodes on the previous database.

Possible Solution

Remove the explicit Route.Random parameter from GlideClusterClient.SelectAsync so glide-core's correct AllNodes default applies.

Related

• task(client): consolidate redundant command implementations into BaseClient #462