Polish "Restore proxying of @Bean methods in @TestConfiguration"

See gh-18675

spring-boot-project/spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -6840,7 +6840,7 @@ The following example shows a `RestDocumentationResultHandler` being defined:
 
 [source,java,indent=0]
 ----
-	@TestConfiguration
+	@TestConfiguration(proxyBeanMethods = false)
 	static class ResultHandlerConfiguration {
 
 		@Bean

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/test/autoconfigure/restdocs/restassured/AdvancedConfigurationExample.java

@@ -24,7 +24,7 @@ import org.springframework.restdocs.templates.TemplateFormats;
 public class AdvancedConfigurationExample {
 
 	// tag::configuration[]
-	@TestConfiguration
+	@TestConfiguration(proxyBeanMethods = false)
 	public static class CustomizationConfiguration implements RestDocsRestAssuredConfigurationCustomizer {
 
 		@Override

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/test/autoconfigure/restdocs/webclient/AdvancedConfigurationExample.java

@@ -23,7 +23,7 @@ import org.springframework.restdocs.webtestclient.WebTestClientRestDocumentation
 public class AdvancedConfigurationExample {
 
 	// tag::configuration[]
-	@TestConfiguration
+	@TestConfiguration(proxyBeanMethods = false)
 	public static class CustomizationConfiguration implements RestDocsWebTestClientConfigurationCustomizer {
 
 		@Override

spring-boot-project/spring-boot-docs/src/test/java/org/springframework/boot/docs/web/client/SampleWebClientTests.java

@@ -49,7 +49,7 @@ class SampleWebClientTests {
 		assertThat(headers.getLocation()).hasHost("other.example.com");
 	}
 
-	@TestConfiguration
+	@TestConfiguration(proxyBeanMethods = false)
 	static class Config {
 
 		@Bean