Add WebSocket transport configuration support

Issue: SPR-11527

src/asciidoc/index.adoc

@@ -37563,8 +37563,7 @@ The Spring Framework provides support for using STOMP over WebSocket through
 the +spring-messaging+ and +spring-websocket+ modules. It's easy to enable it.
 
 Here is an example of configuring a STOMP WebSocket endpoint with SockJS fallback
-options. The endpoint is available for clients to connect to at URL path `/app/portfolio`.
-It is configured with a 1 Mbytes message buffer size limit (64 Kbytes by default):
+options. The endpoint is available for clients to connect to at URL path `/app/portfolio`:
 
 [source,java,indent=0]
 [subs="verbatim,quotes"]
@@ -37579,7 +37578,6 @@ It is configured with a 1 Mbytes message buffer size limit (64 Kbytes by default
 		@Override
         public void configureMessageBroker(MessageBrokerRegistry config) {
             config.setApplicationDestinationPrefixes("/app")
-                .setMessageBufferSizeLimit(1024*1024)
                 .enableSimpleBroker("/queue", "/topic");
         }
 
@@ -37607,7 +37605,7 @@ XML configuration equivalent:
 			http://www.springframework.org/schema/websocket
 			http://www.springframework.org/schema/websocket/spring-websocket-4.0.xsd">
 
-		<websocket:message-broker application-destination-prefix="/app" message-buffer-size="1048576">
+		<websocket:message-broker application-destination-prefix="/app">
 			<websocket:stomp-endpoint path="/portfolio">
 				<websocket:sockjs/>
 			</websocket:stomp-endpoint>