ConfigurationClassEnhancer consistently uses registerStaticCallbacks in order to prevent memory leaks

Issue: SPR-9274

Author: jhoeller

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

@@ -360,7 +360,7 @@ private Object enhanceFactoryBean(Class<?> fbClass, String beanName) throws Inst
 			};
 			enhancer.setCallbackTypes(CALLBACK_TYPES);
 			Class<?> fbSubclass = enhancer.createClass();
-			Enhancer.registerCallbacks(fbSubclass, callbackInstances);
+			Enhancer.registerStaticCallbacks(fbSubclass, callbackInstances);
 			return fbSubclass.newInstance();
 		}
 	}