gf cli In gen dao, the clear parameter will affect the overwriteDao parameter, causing the custom content to be overwritten

```yml

gfcli:
  debug: true
  gen:
    dao:
      - link: "mysql:root:root123@tcp(127.0.0.1:3306)/gfdemo"
        clear: true
        overwriteDao: false
```

当使用以上配置，internal\dao\user.go文件仍然被覆盖，预期是不被覆盖