Treat directly registered Class as configuration 'lite' mode candidate

Closes spring-projectsgh-30449

spring-context/src/main/java/org/springframework/context/annotation/AnnotatedBeanDefinitionReader.java

@@ -255,6 +255,7 @@ private <T> void doRegisterBean(Class<T> beanClass, @Nullable String name,
 			return;
 		}
 
+		abd.setAttribute(ConfigurationClassUtils.CONFIGURATION_CLASS_CANDIDATE_ATTRIBUTE, Boolean.TRUE);
 		abd.setInstanceSupplier(supplier);
 		ScopeMetadata scopeMetadata = this.scopeMetadataResolver.resolveScopeMetadata(abd);
 		abd.setScope(scopeMetadata.getScopeName());

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassUtils.java

@@ -56,6 +56,9 @@ public abstract class ConfigurationClassUtils {
 
 	static final String CONFIGURATION_CLASS_LITE = "lite";
 
+	static final String CONFIGURATION_CLASS_CANDIDATE_ATTRIBUTE =
+			Conventions.getQualifiedAttributeName(ConfigurationClassPostProcessor.class, "configurationClassCandidate");
+
 	static final String CONFIGURATION_CLASS_ATTRIBUTE =
 			Conventions.getQualifiedAttributeName(ConfigurationClassPostProcessor.class, "configurationClass");
 
@@ -136,7 +139,8 @@ else if (beanDef instanceof AbstractBeanDefinition abstractBd && abstractBd.hasB
 		if (config != null && !Boolean.FALSE.equals(config.get("proxyBeanMethods"))) {
 			beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_FULL);
 		}
-		else if (config != null || isConfigurationCandidate(metadata)) {
+		else if (config != null || Boolean.TRUE.equals(beanDef.getAttribute(CONFIGURATION_CLASS_CANDIDATE_ATTRIBUTE)) ||
+				isConfigurationCandidate(metadata)) {
 			beanDef.setAttribute(CONFIGURATION_CLASS_ATTRIBUTE, CONFIGURATION_CLASS_LITE);
 		}
 		else {

spring-context/src/test/java/org/springframework/context/annotation/BeanLiteModeTests.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.context.annotation;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Sam Brannen
+ */
+class BeanLiteModeTests {
+
+	@Test
+	void test() {
+		try (var context = new AnnotationConfigApplicationContext(Config.class)) {
+			var bean1 = context.getBean("bean1", String.class);
+			var bean2 = context.getBean("bean2", String.class);
+
+			assertThat(bean1).isEqualTo("bean1");
+			assertThat(bean2).isEqualTo("bean2");
+		}
+	}
+
+	static class Config extends BaseConfig {
+	}
+
+	static class BaseConfig {
+		@Bean
+		String bean1() {
+			return "bean1";
+		}
+
+		@Bean
+		String bean2() {
+			return "bean2";
+		}
+	}
+
+}