Use try-with-resources for AutoClosables where feasible

Where unfeasible, this commit adds inline comments to explain why
try-with-resources must not be used in certain scenarios. The purpose
of the comments is to avoid accidental conversion to try-with-resources
at a later date.

Closes gh-27823

spring-websocket/src/main/java/org/springframework/web/socket/messaging/StompSubProtocolHandler.java

@@ -374,6 +374,8 @@ public class StompSubProtocolHandler implements SubProtocolHandler, ApplicationE
 		headerAccessor.setMessage(error.getMessage());
 
 		byte[] bytes = this.stompEncoder.encode(headerAccessor.getMessageHeaders(), EMPTY_PAYLOAD);
+		// We cannot use try-with-resources here as, potential, exception upon closing
+		// would still bubble up the stack
 		try {
 			session.sendMessage(new TextMessage(bytes));
 		}