Some apps on Android (e.g. Clash Royale) seem not to be tracked

- [ ] I am on the [latest](https://github.com/ActivityWatch/activitywatch/releases/latest) ActivityWatch version.
(Releases do not include Android version; I am using the latest release from Google Play)
- [x] I have searched the issues of this repo and believe that this is not a duplicate.

- **OS name and version**: Huawei Mate 20 Pro, EMUI version 12.0.0
- **ActivityWatch version**: v0.12.1

## Describe the bug
Time spent using Clash Royale does not appear in ActivityWatch.

## To Reproduce
1. Open Clash Royale
2. Use it for some time
3. Open ActivityWatch

## Expected behavior
The time spent using the app Clash Royale should appear in ActivityWatch, but it does not.

## Additional context
If I open "Raw Data > aw-watcher-android-test", there will be an event for the app Clash Royale, but with a duration of 0 seconds.