Under Wayland, Mattermost should not draw extra window decorations if the compositor encourages client-side decorations

[tmke8]

Checks before filing an issue

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

Mattermost Desktop Version

5.7.0

Operating System

Ubuntu Linux 23.10 x64

Mattermost Server Version

9.7.3

Steps to reproduce

Observe the title bar on Wayland:

Expected behavior

I think on Wayland, the ideal behavior is this (which I think is what Obsidian is doing, for example):

• if the compositor supports server-side decorations (i.e., supports the xdg-decoration protocol), then the application should not draw decorations and leave this to the compositor
• if the compositor doesn't support the above protocol, the application should draw its own decorations in a way that integrates the decorations into the app itself; Mattermost desktop used to have this, but it was removed in version 4.6.0

Observed behavior

Mattermost desktop draws extra borders on GNOME Wayland.

Log Output

n/a

Additional Information

No response