Mark Spring web config classes as proxyBeanMethods=false

Closes gh-23004

Author: bclozel

spring-webflux/src/main/java/org/springframework/web/reactive/config/DelegatingWebFluxConfiguration.java

@@ -37,7 +37,7 @@
  * @author Brian Clozel
  * @since 5.0
  */
-@Configuration
+@Configuration(proxyBeanMethods = false)
 public class DelegatingWebFluxConfiguration extends WebFluxConfigurationSupport {
 
 	private final WebFluxConfigurerComposite configurers = new WebFluxConfigurerComposite();

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.java

@@ -39,7 +39,7 @@
  * @author Rossen Stoyanchev
  * @since 3.1
  */
-@Configuration
+@Configuration(proxyBeanMethods = false)
 public class DelegatingWebMvcConfiguration extends WebMvcConfigurationSupport {
 
 	private final WebMvcConfigurerComposite configurers = new WebMvcConfigurerComposite();