[Dubbo-6746]fix generic interface metadata publish log error

[owen200008]

What is the purpose of the change

fix generic interface metadata publish log error

Brief changelog

fix generic interface metadata publish log error

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[AlbumenJ]

@owen200008 hi, could you please describe why you create this pr? Would this fix any issues?

[owen200008]

when use generic and the interface not in the jar the log will be error.

we have project to proxy remote real dubbo service, the peoject use generic interface to proxy, so we find many error log

[owen200008]

确实写了比较久了，使用泛型代理远程dubbo服务的时候一个接口会报一次error，就是这个去掉error日志
实际我们是知道interface的

如果有时间其他几个也审核下
#6720
#6766

[owen200008]

#6535
remote exception support fastjson serialization
如果有更好的方案请支持下

[chickenlj]

LGTM.