- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.3
* Operating System version: Mac
* Java version: 1.8

### Steps to reproduce this issue

1.  `org/apache/dubbo/registry/support/ProviderConsumerRegTable.java:65` Type 'ProviderInvokerWrapper<>' does not define hashCode(), but is used in a hashing data-structure.
2. Class overrides equals but not hashCode.
* org.apache.dubbo.config.AbstractConfig
* org.apache.dubbo.registry.support.ProviderInvokerWrapper
* org.apache.dubbo.remoting.buffer.AbstractChannelBuffer

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

Whether the above suggestions can be fixed or have other considerations

### Actual Result

Is it considered a bug? Will it fix?

continue;
                }
                try {
                    Method method2 = obj.getClass().getMethod(method1.getName(), method1.getParameterTypes());
                    Object value1 = method1.invoke(this, new Object[]{});
                    Object value2 = method2.invoke(obj, new Object[]{});
                    if (!Objects.equals(value1, value2)) {
                        return false;
                    }
                } catch (Exception e) {
                    return true;
                }
            }
        }
        return true;
    }
    /**
     * Add {@link AbstractConfig instance} into {@link ConfigManager}
     * <p>
     * Current method will invoked by Spring or Java EE container automatically, or should be triggered manually.
     *
     * @see ConfigManager#addConfig(AbstractConfig)
     * @since 2.7.5
     */
    @PostConstruct
    public void addIntoConfigManager() {
        ApplicationModel.getConfigManager().addConfig(this);
    }
}