Protect against 'has not been resolved to a Class'

Update AbstractAutowireCapableBeanFactory.getTypeForFactoryBean to
check AbstractBeanDefinition.hasBeanClass() before calling
getBeanClass(). The protects against a 'Bean class name [<name>] has
not been resolved into an actual Class' IllegalStateException.

Issue: SPR-10304

spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractAutowireCapableBeanFactory.java

@@ -683,7 +683,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 		if (factoryBeanName != null && factoryMethodName != null) {
 			// Try to obtain the FactoryBean's object type without instantiating it at all.
 			BeanDefinition fbDef = getBeanDefinition(factoryBeanName);
-			if (fbDef instanceof AbstractBeanDefinition) {
+			if (fbDef instanceof AbstractBeanDefinition && ((AbstractBeanDefinition) fbDef).hasBeanClass()) {
 				Class<?> fbClass = ((AbstractBeanDefinition) fbDef).getBeanClass();
 				if (ClassUtils.isCglibProxyClass(fbClass)) {
 					// CGLIB subclass methods hide generic parameters. look at the superclass.