ActivityWatch on Android "retains" tracking data after uninstallation

- [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.

- Android 14
- 0.12.1

## Describe the bug
After installation of ActivityWatch app on android, when I go in timeline or activity I already have activity tracked even for the days ActivityWatch wasn't installed

## To Reproduce
Steps to reproduce the behavior, for example:
1. Go to the play store
2. Search and install ActivityWatch
3. Open the app
4. Grant permission
5. Go to "Activity" menu
6. See activities for days before installation
Ex.: I've installed the app on 2024-01-18 and I can see activities from 2024-01-12 (6 days before installation)

## Expected behavior
I suspect that ActivityWatch on android looks into some king of log file to track activity, but when app starts for the first time, It should not display any activity.
Or it that's a feature, we should be able to delete activities to start from an empty activity log.

## Documentation
As described before