ActivityWatcher Android is not logging in-game time for RetroArch emulator

- [x] I am on the [latest](https://github.com/ActivityWatch/activitywatch/releases/latest) ActivityWatch version.
- [x] I have searched the issues of this repo and believe that this is not a duplicate.

- **OS name and version**: Android 13
- **ActivityWatch version**: 0.12.1b5

## Describe the bug
ActivityWatch does not register in-game activity from the retro emulation app RetroArch. Activity _does_ appear to log successfully when using the RetroArch frontend menus, but it doesn't log time once a game has been initialized.

## To Reproduce

1. Install RetroArch for Android
2. Download an emulation core (I tried with mGBA and snes9x for GBA and SNES games respectively)
3. Launch a game and play for some amount of time
4. Open ActivityWatch and view the timeline, where the in-game time will not have been tracked

## Expected behavior
I would have expected the time spent in-game to appear as "RetroArch" in ActivityWatcher