help request: How to customize the log file path in apisix-go-plugin-runner

### Description

As the [documentation](https://apisix.apache.org/zh/docs/go-plugin-runner/getting-started/) says I modified the LogOutput of runner.RunnerConfig{} by modifying LogFilePath, but no matter what path I modify LogFilePath to, the log of go-plugin will be printed in apisix_log/error.log in the end.So I want to know How can I customize the log file path in apisix-go-plugin-runner.Thanks

### Environment

APISIX version (run apisix version):3.0.0
Operating system (run uname -a):Linux eee3e01b5631 4.19.76-linuxkit https://github.com/apache/apisix/pull/1 SMP Tue May 26 11:42:35 UTC 2020 x86_64 GNU/Linux
OpenResty / Nginx version (run openresty -V or nginx -V):nginx version: openresty/1.21.4.1;built by gcc 10.2.1 20210110 (Debian 10.2.1-6);built with OpenSSL 1.1.1n 15 Mar 2022
etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):
APISIX Dashboard version, if relevant:apache/apisix-dashboard:2.13-alpine
Plugin runner version, for issues related to plugin runners:apisix-go-plugin-runner(master)
LuaRocks version, for installation issues (run luarocks --version):