SELECT command in Send Command can change database on shared cluster client

[ravjotbrar]

Description

On cluster connections, all connectionIds share a single GlideClusterClient. If a user runs SELECT <N> via Send Command, it changes the active database on the shared connection, affecting all other users/connections using that cluster client.

Possible Fix

Add SELECT to the command confirm list for cluster connections, since database selection should only happen at connection time via the databaseId client option.