helm-mapkubeapis plugin local install error

It is currently impossible to install the plugin locally from the archive. If you follow the commands below, helm makes a symbolic link to the helm-mapkubeapis directory. This offline installation method could work if the mapkubeapis binary were delivered directly under the bin directory in the archive.

```
[root@trinity ~]# mkdir helm-mapkubeapis
[root@trinity ~]# tar xzf helm-mapkubeapis_0.4.1_linux_amd64.tar.gz -C helm-mapkubeapis
[root@trinity ~]# export HELM_LINTER_PLUGIN_NO_INSTALL_HOOK=true
[root@trinity ~]# helm plugin install helm-mapkubeapis
[root@trinity ~]# helm mapkubeapis
Error: fork/exec /root/.local/share/helm/plugins/helm-mapkubeapis/bin/mapkubeapis: no such file or directory
[root@trinity3 (TRINITY) ~]# ll /root/.local/share/helm/plugins/helm-mapkubeapis
lrwxrwxrwx. 1 root root 22 Jan 5 15:11 /root/.local/share/helm/plugins/helm-mapkubeapis -> /root/helm-mapkubeapis
[root@trinity3 (TRINITY) ~]# ll /root/helm-mapkubeapis
total 42508
-rw-r--r--. 1 1001 1002 11357 Mar 7 2023 LICENSE
-rw-r--r--. 1 1001 1002 10234 Mar 7 2023 README.md
drwxr-xr-x. 2 root root 4096 Jan 5 15:10 config
-rwxr-xr-x. 1 1001 1002 43491328 Mar 7 2023 mapkubeapis
-rw-r--r--. 1 1001 1002 327 Mar 7 2023 plugin.yaml
drwxr-xr-x. 2 root root 4096 Jan 5 15:10 scripts
```

I don't know if this fix is a good idea or not, as it seems to me that a new helm feature is needed (https://github.com/helm/helm/issues/12684)

Reproduce the documented archive extraction and `helm plugin install` commands, then inspect the archive layout and its `plugin.yaml`. Verify how the installed symlink resolves the executable and determine whether the packaged binary is placed where Helm expects it. Done means the offline archive installation allows `helm mapkubeapis` to run without the reported missing-file error.

Written by the indexing model from the issue text.