Angelfish browser flatpak don't start

Since epiphany don't support webrtc yet (waiting for https://github.com/philn/webkit/commits/gstwebrtc-2022-01) and Firefox ESR is not fully adaptive and based on old codebase, angelfish could fill the gap till those two issues are fixed.

Another option is falkon browser by KDE, but that is not very adaptive and not actively maintained.

Angelfish is adaptive (maintained by plasma mobile) and supports webrtc (I have not tested personally but it uses same back end as Falkon browser which I have tested). So if we can fix this issue, we can have an adaptive browser with webrtc support right now.

https://wiki.mobian-project.org/doku.php?id=angelfish has some more details. I tried passing the suggested env variable to flatpak command but that did not work (I'm not sure if passing env variables to flatpak apps is possible).