We're currently not checking the connection state before sending stream invocations on the Java client.
Semi related to: #11995
Probably will fix at the same time but wanted to be sure to track it.

https://github.com/aspnet/AspNetCore/blob/f9ca0ffd7103380625ce473d0c599c57ca985e19/src/SignalR/clients/java/signalr/src/main/java/com/microsoft/signalr/HubConnection.java#L679-L682