Expand scope of equals() in PerTargetInstantiationModelPointcut

This commit expands the scope of equality checks in the implementation
of equals() for PerTargetInstantiationModelPointcut to include all
fields instead of just the pointcut expression for the declared
pointcut.

See spring-projectsgh-31238

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

@@ -303,7 +303,9 @@ private boolean isAspectMaterialized() {
 		@Override
 		public boolean equals(@Nullable Object other) {
 			return (this == other || (other instanceof PerTargetInstantiationModelPointcut that &&
-					ObjectUtils.nullSafeEquals(this.declaredPointcut.getExpression(), that.declaredPointcut.getExpression())));
+					ObjectUtils.nullSafeEquals(this.declaredPointcut, that.declaredPointcut) &&
+					ObjectUtils.nullSafeEquals(this.preInstantiationPointcut, that.preInstantiationPointcut) &&
+					ObjectUtils.nullSafeEquals(this.aspectInstanceFactory, that.aspectInstanceFactory)));
 		}
 
 		@Override