Fix JAXB_PRESENT variable for the proper class

The `BaseHttpInboundEndpoint` has a `JAXB_PRESENT` variable
to check before including `Jaxb2RootElementHttpMessageConverter`
which has to do that against `jakarta.xml.bind.Binder` class from Jakarta EE

Author: artembilan

spring-integration-http/src/main/java/org/springframework/integration/http/inbound/BaseHttpInboundEndpoint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2021 the original author or authors.
+ * Copyright 2017-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -57,7 +57,7 @@
  */
 public class BaseHttpInboundEndpoint extends MessagingGatewaySupport implements OrderlyShutdownCapable {
 
-	protected static final boolean JAXB_PRESENT = ClassUtils.isPresent("javax.xml.bind.Binder", null);
+	protected static final boolean JAXB_PRESENT = ClassUtils.isPresent("jakarta.xml.bind.Binder", null);
 
 	protected static final boolean ROME_TOOLS_PRESENT = ClassUtils.isPresent("com.rometools.rome.feed.atom.Feed", null);