Declare beans that can be instantiated at build-time static

This commit updates the bean factory methods for beans that can be
instantiated at build-time to be static. Doing so makes sure that
the enclosing configuration class does not have to be resolved in
order to create the instance.

Closes gh-32570

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/reactive/ReactiveManagementContextAutoConfiguration.java

@@ -42,7 +42,7 @@ import org.springframework.context.annotation.Bean;
 public class ReactiveManagementContextAutoConfiguration {
 
 	@Bean
-	public ManagementContextFactory reactiveWebChildContextFactory() {
+	public static ManagementContextFactory reactiveWebChildContextFactory() {
 		return new ManagementContextFactory(WebApplicationType.REACTIVE, ReactiveWebServerFactory.class,
 				ReactiveWebServerFactoryAutoConfiguration.class);
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/web/server/ManagementContextAutoConfiguration.java

@@ -111,7 +111,7 @@ public class ManagementContextAutoConfiguration {
 	static class DifferentManagementContextConfiguration {
 
 		@Bean
-		ChildManagementContextInitializer childManagementContextInitializer(
+		static ChildManagementContextInitializer childManagementContextInitializer(
 				ManagementContextFactory managementContextFactory, ApplicationContext parentContext) {
 			return new ChildManagementContextInitializer(managementContextFactory, parentContext);
 		}

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

@@ -47,7 +47,7 @@ import org.springframework.context.annotation.Configuration;
 public class ServletManagementContextAutoConfiguration {
 
 	@Bean
-	public ManagementContextFactory servletWebChildContextFactory() {
+	public static ManagementContextFactory servletWebChildContextFactory() {
 		return new ManagementContextFactory(WebApplicationType.SERVLET, ServletWebServerFactory.class,
 				ServletWebServerFactoryAutoConfiguration.class);
 	}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/cassandra/CassandraDataAutoConfiguration.java

@@ -69,7 +69,7 @@ public class CassandraDataAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	public CassandraManagedTypes cassandraManagedTypes(BeanFactory beanFactory) throws ClassNotFoundException {
+	public static CassandraManagedTypes cassandraManagedTypes(BeanFactory beanFactory) throws ClassNotFoundException {
 		List<String> packages = EntityScanPackages.get(beanFactory).getPackageNames();
 		if (packages.isEmpty() && AutoConfigurationPackages.has(beanFactory)) {
 			packages = AutoConfigurationPackages.get(beanFactory);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/mongo/MongoDataConfiguration.java

@@ -44,7 +44,7 @@ class MongoDataConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	MongoManagedTypes mongoManagedTypes(ApplicationContext applicationContext) throws ClassNotFoundException {
+	static MongoManagedTypes mongoManagedTypes(ApplicationContext applicationContext) throws ClassNotFoundException {
 		return MongoManagedTypes.fromIterable(new EntityScanner(applicationContext).scan(Document.class));
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/r2dbc/R2dbcDataAutoConfiguration.java

@@ -72,7 +72,7 @@ public class R2dbcDataAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	RelationalManagedTypes r2dbcManagedTypes(ApplicationContext applicationContext) throws ClassNotFoundException {
+	static RelationalManagedTypes r2dbcManagedTypes(ApplicationContext applicationContext) throws ClassNotFoundException {
 		return RelationalManagedTypes.fromIterable(new EntityScanner(applicationContext).scan(Table.class));
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/JpaBaseConfiguration.java

@@ -190,7 +190,7 @@ public abstract class JpaBaseConfiguration {
 		@Bean
 		@Primary
 		@ConditionalOnMissingBean
-		PersistenceManagedTypes persistenceManagedTypes(BeanFactory beanFactory, ResourceLoader resourceLoader) {
+		static PersistenceManagedTypes persistenceManagedTypes(BeanFactory beanFactory, ResourceLoader resourceLoader) {
 			String[] packagesToScan = getPackagesToScan(beanFactory);
 			return new PersistenceManagedTypesScanner(resourceLoader).scan(packagesToScan);
 		}