Fix: Fixed issue where archives opened in new tab instead of existing one

[marcofranzen99]

Resolved / Related Issues

• Closes Bug: Archives should open in the same tab not a new one #16646

Steps used to test these changes

1. Set the default app for the '.zip' file extension to Files
2. Open a '.zip' file using Files
3. Verify that the archive opens in the same tab, not a new one

Description
On my system, multiple applications were returned for the .zip file extension. The first association returned was not Files, which caused .zip files to open in a new tab instead of the same one.
With this change, all associations are now checked

[Josh65-2201]

Works for me

[Copilot]

Pull Request Overview

This PR fixes a bug where ZIP archives would open in a new tab instead of the existing tab when multiple applications were registered for the .zip file extension. The issue occurred because only the first file association was checked, which might not be the Files app itself.

• Refactored file association checking to examine all registered associations instead of just the first one
• Added new method GetAllFileAssociationsAsync to retrieve all file associations for a given file type
• Updated the ZIP folder logic to use Any() check across all associations to determine if Files app can handle the file

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
ZipStorageFolder.cs	Updated CheckDefaultZipApp to use new method that checks all file associations instead of just the first one
Win32Helper.Storage.cs	Added GetAllFileAssociationsAsync method and refactored existing association logic into reusable helper methods

[yaira2]

If I change the default association to File Explorer, it still opens in Files. The expected behavior is to respect the default association.

[marcofranzen99]

The current implementation GetAllFileAssociationsAsync uses Launcher.FindFileHandlersAsync, which returns all apps that are capable of opening the file extension (not just the default)
I think we might need to query the default app / user choice from the registry. For .zip the path would be
Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts.zip\UserChoice