The `KILL` statement is used to terminate `LIVE SELECT` subscriptions that capture real-time changes to data within a table. The `KILL` statement implementation in `core/src/expr/statements/kill.rs` verifies that the requesting user has database-level access, but does not verify that the requesting user is the owner of the live query being terminated. After passing the `valid_for_db()` check, the `KILL` statement resolves the live query UUID, looks up the corresponding live query entry, and im