BUG Open data path button doesn't work in Flatpak #285

Describe the bug
After installing 1.5.0-beta.7, the new "Open data path" button on the settings page doesn't work when using Flatpak.

To Reproduce
Steps to reproduce the behavior:

1. Install 1.5.0-beta.7 using Flatpak and open it
2. Open settings
3. Go to Developer tab
4. Click Open button

Expected behavior
Folder should open in users selected folder browser

Screenshots

Portal call failed: Failed to start command: Failed to change to directory “/app/bin/StreamController” (No such file or directory)