Simplify equals() implementation in PerTargetInstantiationModelPointcut

For equivalence, we only need to compare the preInstantiationPointcut
fields since they include the declaredPointcut fields. In addition, we
should not compare the aspectInstanceFactory fields since
LazySingletonAspectInstanceFactoryDecorator does not implement equals().

See gh-31238

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/InstantiationModelAwarePointcutAdvisorImpl.java

@@ -302,10 +302,12 @@ final class InstantiationModelAwarePointcutAdvisorImpl
 
 		@Override
 		public boolean equals(@Nullable Object other) {
+			// For equivalence, we only need to compare the preInstantiationPointcut fields since
+			// they include the declaredPointcut fields. In addition, we should not compare the
+			// aspectInstanceFactory fields since LazySingletonAspectInstanceFactoryDecorator does
+			// not implement equals().
 			return (this == other || (other instanceof PerTargetInstantiationModelPointcut that &&
-					ObjectUtils.nullSafeEquals(this.declaredPointcut, that.declaredPointcut) &&
-					ObjectUtils.nullSafeEquals(this.preInstantiationPointcut, that.preInstantiationPointcut) &&
-					ObjectUtils.nullSafeEquals(this.aspectInstanceFactory, that.aspectInstanceFactory)));
+					ObjectUtils.nullSafeEquals(this.preInstantiationPointcut, that.preInstantiationPointcut)));
 		}
 
 		@Override