be53593af9
Within Spring Integration's WebSocket support, a `ConcurrentWebSocketSessionDecorator`, which buffers outbound messages if sending is slow, is used to decorate all websocket sessions in `IntegrationWebSocketContainer`, the standard entrypoint for using websockets with Integration. * Expose a `ConcurrentWebSocketSessionDecorator.OverflowStrategy` option on the `IntegrationWebSocketContainer` **Cherry-pick to `5.5.x`, `6.0.x` & `6.1.x`**