Avoid unnecessary parameter name inspection for factory method type check

Closes gh-30103
See gh-29612

Author: jhoeller

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

@@ -754,13 +754,15 @@ protected Class<?> getTypeForFactoryMethod(String beanName, RootBeanDefinition m
 					if (candidate.getTypeParameters().length > 0) {
 						try {
 							// Fully resolve parameter names and argument values.
+							ConstructorArgumentValues cav = mbd.getConstructorArgumentValues();
 							Class<?>[] paramTypes = candidate.getParameterTypes();
 							String[] paramNames = null;
-							ParameterNameDiscoverer pnd = getParameterNameDiscoverer();
-							if (pnd != null) {
-								paramNames = pnd.getParameterNames(candidate);
+							if (cav.containsNamedArgument()) {
+								ParameterNameDiscoverer pnd = getParameterNameDiscoverer();
+								if (pnd != null) {
+									paramNames = pnd.getParameterNames(candidate);
+								}
 							}
-							ConstructorArgumentValues cav = mbd.getConstructorArgumentValues();
 							Set<ConstructorArgumentValues.ValueHolder> usedValueHolders = new HashSet<>(paramTypes.length);
 							Object[] args = new Object[paramTypes.length];
 							for (int i = 0; i < args.length; i++) {