desktop: [Bug]: Deeplinks do not work on linux or mac

Checks before filing an issue

• This issue doesn’t reproduce on web browsers (such as in Chrome). If it does, issue reports go to the Mattermost Server repository.
• I have checked the issue tracker and have not found an issue that matches the one I’m filing.
• This issue is not a troubleshooting question. Troubleshooting questions go here: https://forum.mattermost.com/c/trouble-shoot/16.
• This issue is not a feature request. You can request features and make product suggestions here: https://mattermost.com/suggestions/.
• This issue reproduces on the most recent stable version, or the most recent prerelease version of the Mattermost Desktop App.
• I have read the contribution guidelines.

Mattermost Desktop Version

5.5.1

Operating System

Ubuntu Linux 22.04 LTS x64

Mattermost Server Version

9.1.2

Steps to reproduce

Open a chat between two users, eg

https://radiopaedia.org/chat/dev/messages/@frank

When prompted, ask to “open in the app” (this links to mattermost://radiopaedia.org/chat/dev/messages/@frank )

Expected behavior

App gains focus and navigates to that chat

Observed behavior

App gains focus and refreshes the display, but keeps focus on the channel you were already in.

Log Output

Help -> Show logs does not open a dialog in the current snap store release.

Additional Information

This issue is also reported by our users on OSX. I also can’t get this to work by killing the desktop app and then launching it via mattermost:// url (it launches, but not to the right room).

I’ve tried setting breakpoints in triageArgs, but they aren’t hit if you load the app while it’s already running