【3.2】 使用Protobuf做序列化器时，在INJVM模式会因为深度拷贝导致response字段为空

[vio-lin]

What is the purpose of the change

修复INJVM模式下 Protobuf对象，不能被正常深度拷贝

Brief changelog

dubbo-spi-extensions\dubbo-serialization-extensions\dubbo-serialization-protobuf\src\test\java\org\apache\dubbo\common\serialize\protobuf\support\ProtobufParamDeepCopyUtilTest.java

dubbo-spi-extensions\dubbo-serialization-extensions\dubbo-serialization-protobuf\src\main\resources\META-INF\dubbo\internal\org.apache.dubbo.rpc.protocol.injvm.ParamDeepCopyUtil

Verifying this change

增加一个wraper 扩展，假如继承protobuf的接口，则使用另外的序列化器。

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[aofall]

may be fixed in #268