Add constructor introspection hint on Configuration class target

See gh-29358

spring-context/src/test/java/org/springframework/context/aot/ApplicationContextAotGeneratorTests.java

@@ -17,6 +17,7 @@
 package org.springframework.context.aot;
 
 import java.io.IOException;
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Proxy;
 import java.util.List;
 import java.util.function.BiConsumer;
@@ -333,6 +334,16 @@ class ApplicationContextAotGeneratorTests {
 			});
 		}
 
+		@Test
+		void processAheadOfTimeWhenHasCglibProxyWithArgumentsRegisterIntrospectionHintsOnUserClass() {
+			GenericApplicationContext applicationContext = new AnnotationConfigApplicationContext();
+			applicationContext.registerBean(ConfigurableCglibConfiguration.class);
+			TestGenerationContext generationContext = processAheadOfTime(applicationContext);
+			Constructor<?> userConstructor = ConfigurableCglibConfiguration.class.getDeclaredConstructors()[0];
+			assertThat(RuntimeHintsPredicates.reflection().onConstructor(userConstructor).introspect())
+					.accepts(generationContext.getRuntimeHints());
+		}
+
 	}
 
 	private Consumer<List<? extends JdkProxyHint>> doesNotHaveProxyFor(Class<?> target) {