unexpected "key enrollment failed: invalid format"

Prerequisites

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

Steps to reproduce

update open-ssh to last version on windows uisng:
Start-Process -NoNewWindow msiexec.exe -ArgumentList "/i <full_path_to>\OpenSSH-Win64-v9.4.0.msi ADDLOCAL=Client ADD_PATH=1" -Wait
restart powershell
ssh-keygen -t ed25519-sk -f $env:USERPROFILE\.ssh\id_ed25519_sk

Expected behavior

key should be generated after requesting to touch the yubikey

Actual behavior

Generating public/private ed25519-sk key pair.
You may need to touch your authenticator to authorize key generation.
Key enrollment failed: invalid format

this prompt is received without even requesting to touch the key

### Error details

_No response_

### Environment data

```PowerShell
Name                           Value
----                           -----
PSVersion                      5.1.22621.2506
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.22621.2506
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Version

OpenSSH_for_Windows_9.5p1, LibreSSL 3.8.2

Visuals

Start by reproducing the failure with the PowerShell ssh-keygen -t ed25519-sk command after installing OpenSSH_for_Windows_9.5p1, using the reported YubiKey setup. Trace the ssh-keygen security-key enrollment path and compare the invalid-format result with the expected touch prompt; done means an ed25519-sk key is generated successfully after requesting authenticator interaction.