App does not launch anymore after update

After running `flatpak update` this app does not launch anymore.
It shows an icon in the system tray but the actual window / gui does not show up.

I had this issue about a few weeks ago already and fixed it by downgrading:
`flatpak update --commit=46251119039a63f2167d4165547c5fd15ad0a3a861e115fe8717dd74ef42374c com.mongodb.Compass`

Now I tried `flatpak update` again and it is broken again. The downgrade doesn't work anymore (server now returns 404 for this commit) so I can't use it anymore.

If I remember correctly the downgrade was to version 1.49.8 before the node24 and wayland / fallback-x11 changes.

Logs from the old version (GUI shows up):
```
> flatpak run com.mongodb.Compass
[3:0730/170225.427934:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[3:0730/170225.972388:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[3:0730/170225.972453:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
LaunchProcess: failed to execvp:
xdg-settings
LaunchProcess: failed to execvp:
xdg-settings
```

Logs after flatpak update with the latest version (no GUI window):
```
> flatpak run com.mongodb.Compass
[3:0730/172857.123618:ERROR:dbus/bus.cc:405] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[3:0730/172857.557027:ERROR:dbus/bus.cc:405] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[3:0730/172857.557052:ERROR:dbus/bus.cc:405] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[51:0730/172857.600333:ERROR:media/gpu/vaapi/vaapi_wrapper.cc:1640] vaInitialize failed: unknown libva error
LaunchProcess: failed to execvp:
xdg-settings
LaunchProcess: failed to execvp:
xdg-settings
```

There is a new error in the log about vaapi stuff. Not sure why this app would even need vaapi and how to disable it if it causes the issue.

Begin with the documented entry point `flatpak run com.mongodb.Compass` and reproduce the failure on the latest update, comparing its logs with the working 1.49.8 logs. Investigate the reported Node 24, Wayland/fallback-X11, and VAAPI changes; done means the updated Flatpak launches its GUI reliably and the regression is covered by the project’s available validation.

Written by the indexing model from the issue text.