[Package Issue]: ItchIo.Itch v26.18.0

### Please confirm these before moving forward

- [x] I have searched for my issue and not found a work-in-progress/duplicate/resolved issue.
- [x] I have not been informed if the issue is resolved in a preview version of the winget client.

### Category of the issue

Other

### Brief description of your issue

Updating from the prior version of the package to this one results in no updated status within WinGet, even though the update does seem to have happened to the Itch client.

### Steps to reproduce

1. Have Itch client v26.17.0 installed
2. `winget update itchio.itch`

### Actual behavior

WinGet status for the package does not change; it still indicates v26.17.0 installed with v26.18.0 available.

### Expected behavior

WinGet status reflects the new version.

### Environment

```raw
Windows Package Manager v1.29.280
© 2026 Microsoft. All rights reserved.

Windows: Windows.Desktop v10.0.22631.6199
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.29.280.0

WinGet Directories
-------------------------------------------------------------------------------------------------------------------------------
Logs %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\DiagOutputDir
User Settings %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\settings.json
Portable Links Directory (User) %LOCALAPPDATA%\Microsoft\WinGet\Links
Portable Links Directory (Machine) C:\Program Files\WinGet\Links
Portable Package Root (User) %LOCALAPPDATA%\Microsoft\WinGet\Packages
Portable Package Root C:\Program Files\WinGet\Packages
Portable Package Root (x86) C:\Program Files (x86)\WinGet\Packages
Installer Downloads %USERPROFILE%\Downloads
Configuration Modules %LOCALAPPDATA%\Microsoft\WinGet\Configuration\Modules

Links
---------------------------------------------------------------------------
Privacy Statement https://aka.ms/winget-privacy
License Agreement https://aka.ms/winget-license
Third Party Notices https://aka.ms/winget-3rdPartyNotice
Homepage https://aka.ms/winget
Windows Store Terms https://www.microsoft.com/en-us/storedocs/terms-of-sale

Admin Setting State
--------------------------------------------------
LocalManifestFiles Disabled
BypassCertificatePinningForMicrosoftStore Disabled
InstallerHashOverride Disabled
LocalArchiveMalwareScanOverride Disabled
ProxyCommandLineOptions Disabled
ConfigurationProcessorPath Disabled
DefaultProxy Disabled
```

### Screenshots and Logs

```
PS C:\Users\Atario> winget list itchio.itch
Name Id Version Available Source
-----------------------------------------
itch ItchIo.Itch 26.17.0 26.18.0 winget
PS C:\Users\Atario> winget update itchio.itch
Found itch [ItchIo.Itch] Version 26.18.0
This application is licensed to you by its owner.
Microsoft is not responsible for, nor does it grant any licenses to, third-party packages.
Successfully verified installer hash
Extracting archive...
Successfully extracted archive
Starting package install...
Successfully installed
PS C:\Users\Atario> winget list itchio.itch
Name Id Version Available Source
-----------------------------------------
itch ItchIo.Itch 26.17.0 26.18.0 winget
PS C:\Users\Atario>
```

Reproduce the report with `winget list itchio.itch` and `winget update itchio.itch` using Itch 26.17.0 and 26.18.0. Compare the package's installed-version detection with the successful installer output; done means `winget list itchio.itch` reports 26.18.0 installed and no longer offers that update.

Written by the indexing model from the issue text.