"Count audible browser tab as active" is decreasing the total activity time

- [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**: Windows 11 Pro 22H2
- **ActivityWatch version**: v0.12.1

## Describe the bug
In the activity view, when I use the filter "Count audible browser tab as active", the total active time decrease instead of increasing.
It is as is the audible window time was counted negatively ?

## To Reproduce
1. Go to the activity page
2. Click on filters
3. Make sure the checkbox "Count audible browser tab as active" is not selected
4. remember the activity time for the day
5. check the box "Count audible browser tab as active"
6. observe that the activity time has decreased

## Expected behavior
With this filter is enabled, the activity time should be greater or equal as when is is not selected (depending on whether you've used audible tabs)

## Documentation

## Additional context

AW was installed from the windows installer. I have almost not touched the settings. I'm not sure whether I have a browser watcher or not. I I don't the time should not be affected at all anyway.