Update RouteMatcher configuration for RSocket

This commit updates the `RouteMatcher` configuration after the latest
Spring Framework changes. The default route matcher implementation based
on the `PathPattern` infrastructure is now tailored for the messaging
use case (path separator, path encoding options and trailing separator).

See spring-projects/spring-framework#23310

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/rsocket/RSocketMessagingAutoConfiguration.java

@@ -29,7 +29,6 @@
 import org.springframework.messaging.rsocket.RSocketStrategies;
 import org.springframework.messaging.rsocket.annotation.support.RSocketMessageHandler;
 import org.springframework.util.ClassUtils;
-import org.springframework.web.util.pattern.PathPatternParser;
 import org.springframework.web.util.pattern.PathPatternRouteMatcher;
 
 /**
@@ -52,9 +51,7 @@ public RSocketMessageHandler messageHandler(RSocketStrategies rSocketStrategies)
 		RSocketMessageHandler messageHandler = new RSocketMessageHandler();
 		messageHandler.setRSocketStrategies(rSocketStrategies);
 		if (ClassUtils.isPresent(PATHPATTERN_ROUTEMATCHER_CLASS, null)) {
-			PathPatternParser parser = new PathPatternParser();
-			parser.setSeparator('.');
-			messageHandler.setRouteMatcher(new PathPatternRouteMatcher(parser));
+			messageHandler.setRouteMatcher(new PathPatternRouteMatcher());
 		}
 		return messageHandler;
 	}