Run ManagementErrorPageCustomizer after core factory customizer

This commit orders ManagementErrorPageCustomizer so that is runs after
ManagementWebServerFactoryCustomizer. Previously, they had the same
order and could run either way.

Closes gh-45728

Author: snicoll

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/servlet/WebMvcEndpointChildContextConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2025 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.
@@ -128,7 +128,7 @@ public void customize(ConfigurableServletWebServerFactory factory) {
 
 		@Override
 		public int getOrder() {
-			return 0;
+			return 10; // Run after ManagementWebServerFactoryCustomizer
 		}
 
 	}