Polish "Wrap ternary operator within parentheses"

See gh-31076

spring-beans/src/test/java/org/springframework/beans/factory/support/Spr8954Tests.java

@@ -129,7 +129,7 @@ public class Spr8954Tests {
 
 		@Override
 		public Class<?> predictBeanType(Class<?> beanClass, String beanName) {
-			return FactoryBean.class.isAssignableFrom(beanClass) ? PredictedType.class : null;
+			return (FactoryBean.class.isAssignableFrom(beanClass) ? PredictedType.class : null);
 		}
 	}