[Windows] Test coverage missing for part of User home dir setup login on Windows

[arixmkii]

Description

Identified by this comment #3304 (comment)

There is non-trivial piece of code for deriving user home in guest VM using cygpath/wslpath. Both a similar, but have behavior differences and could have configuration differences.

For testing purposes this could would need to be refactored and mocks created for the tools themselves.

The thing to think about is. May be this code can be removed at all, because it is followed up by

lima/pkg/osutil/user.go

Line 167 in 786c1f5

if home == "" {

which is re-implementation of basics of the cygpath processing Windows paths into Unix (default msys2 configuration, no FS customizations). May be this is really sufficient for the case, especially because the path from the tools has to be updated with some sort of prefix and is not used directly (to prevent collision with mounts).