Unsubscribes and removes all Realtime channels from Realtime client.
Removing channels is a great way to maintain the performance of your project's Realtime service as well as your database if you're listening to Postgres changes. Supabase will automatically handle cleanup 30 seconds after a client is disconnected, but unused channels may cause degradation as more clients are simultaneously subscribed.
If you removed all channels, the client automatically disconnects from the Realtime websocket. This can be disabled in the Realtime config by setting disconnectOnNoSubscriptions to false.