fix: restore rootLocation on LocalFilesystemAdapter

[paul-thebaud]

Bug Report

Q	A
Flysystem Version	3.11.0
Adapter Name	Local
Adapter version	?

Summary

With the #1582 PR, the rootLocation property of local adapter was removed and replaced by $this->prefixer->prefixPath('/') to get the root path inside ensureRootDirectoryExists . This is bad, because when using a "fake" / root on Windows (to get access to all disks with a unique filesystem instance), the prefixPath method will return an empty string.

Proposition

I think you should restore the rootLocation property on the class and use it inside the ensureRootDirectoryExists method.

How to reproduce

Configure a local adapter on windows with a / root path. Ensure root directory exists will crash.

[frankdejonge]

It was restored. Release coming soon.

[paul-thebaud]

Thanks a lot @frankdejonge!