只配置了init-destroy属性的代理对象无法找到销毁方法

前提条件：一个bean，需要被代理，并且走的是Jdk动态代理。没有实现DisposableBean的接口，但是添加了自定义销毁的配置init-destroy。

初始化之后，会在BeanPostProcessor的后置增强方法中创建一个代理对象！但是由于init-destory不属于接口中的方法，所以代理对象大概率是找不到该方法的！那么在DisposableBeanAdapter类中就找不到该类的销毁方法，导致无法执行

Start by tracing the JDK dynamic proxy creation in the BeanPostProcessor path and then read DisposableBeanAdapter to see how the configured destroy method is located. Reproduce the case with a proxied bean that uses only custom init-destroy configuration; done means its configured destroy method is found and invoked despite not being declared on the proxy interface.

Written by the indexing model from the issue text.