Ignore uncategorised data does not work as expected

- [x ] I am on the [beta](https://github.com/ActivityWatch/activitywatch/releases/tag/v0.12.2b1) ActivityWatch version.
- [ x] I have searched the issues of this repo and believe that this is not a duplicate.

- **MacOS Ventura 13.2**
- **v0.12.2b1**

## Describe the bug

When in the Categorization helper screen, clicking on ignore for uncategorized events doesn't ignore them. When I refresh the page they simply come back.

## To Reproduce

## Expected behavior

I would expect the events to stay ignored and for the data to be removed from the reports

## Documentation

## Additional context