Apply filter order to ServerHttpObservationFilter

Closes gh-35067

Author: mhalbritter

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

@@ -44,7 +44,6 @@
 import org.springframework.boot.web.servlet.FilterRegistrationBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
 import org.springframework.http.server.observation.DefaultServerRequestObservationConvention;
 import org.springframework.http.server.observation.ServerRequestObservationConvention;
@@ -58,6 +57,7 @@
  * @author Brian Clozel
  * @author Jon Schneider
  * @author Dmytro Nosan
+ * @author Moritz Halbritter
  * @since 3.0.0
  */
 @AutoConfiguration(after = { MetricsAutoConfiguration.class, CompositeMeterRegistryAutoConfiguration.class,
@@ -90,7 +90,7 @@ public FilterRegistrationBean<ServerHttpObservationFilter> webMvcObservationFilt
 				customTagsProvider.getIfAvailable(), contributorsProvider.orderedStream().toList());
 		ServerHttpObservationFilter filter = new ServerHttpObservationFilter(registry, convention);
 		FilterRegistrationBean<ServerHttpObservationFilter> registration = new FilterRegistrationBean<>(filter);
-		registration.setOrder(Ordered.HIGHEST_PRECEDENCE + 1);
+		registration.setOrder(this.observationProperties.getHttp().getServer().getFilter().getOrder());
 		registration.setDispatcherTypes(DispatcherType.REQUEST, DispatcherType.ASYNC);
 		return registration;
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/web/servlet/WebMvcObservationAutoConfigurationTests.java

@@ -64,6 +64,7 @@
  * @author Tadaya Tsuyukubo
  * @author Madhura Bhave
  * @author Chanhyeong LEE
+ * @author Moritz Halbritter
  */
 @ExtendWith(OutputCaptureExtension.class)
 @SuppressWarnings("removal")
@@ -117,6 +118,15 @@ void filterRegistrationHasExpectedDispatcherTypesAndOrder() {
 		});
 	}
 
+	@Test
+	void filterRegistrationOrderCanBeOverridden() {
+		this.contextRunner.withPropertyValues("management.observations.http.server.filter.order=1000")
+			.run((context) -> {
+				FilterRegistrationBean<?> registration = context.getBean(FilterRegistrationBean.class);
+				assertThat(registration.getOrder()).isEqualTo(1000);
+			});
+	}
+
 	@Test
 	void filterRegistrationBacksOffWithAnotherServerHttpObservationFilterRegistration() {
 		this.contextRunner.withUserConfiguration(TestServerHttpObservationFilterRegistrationConfiguration.class)