Win32-OpenSSH doesn't recognize WinRM Virtual Users

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest version
• Search the existing issues.

Steps to reproduce

I want to run ssh-keygen inside a PowerShell JEA session running under a virtual account to manage SSH certificates. Unfortunately many of the ssh commands want to convert a UID to username even when it would not strictly be required - ssh-keygen being one of them. This fails when running under a virtual account.

Expected behavior

PS> ssh-keygen.exe -s C:\\ca -I "<user>" -n root C:\\user.pub
Signed user key user-cert.pub: id "<user>" serial 0 for root valid forever

Actual behavior

# JEA session configuration:
PS> Get-Content myjea.pssc
...
RunAsVirtualAccount = $true
...

# inside JEA session:
PS> whoami.exe
winrm virtual users\winrm va_11_<domain>_<user>

# run a custom JEA command:
PS> New-SSHCertificate ...
# which would run behind the scenes:
# ssh-keygen.exe -s C:\\ca -I "<user>" -n root C:\\user.pub
# result:
No user exists for uid 1

Error details

Environment data

PS> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.5.4
PSEdition                      Core
GitCommitId                    7.5.4
OS                             Microsoft Windows 10.0.20348
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Version

7.5.4

Visuals

No response