[Windows] Import doesn't work

**AW**: 0.11.0.
**OS**: Windows 10 LTSC (version 1809) x64.
**Browser**: ungoogled-chromium [92.0.4515.107](https://github.com/macchrome/winchrome/releases/tag/v92.0.4515.107-r885287-Win64).

Today I've updated ungoogled-chromium from [89.0.4389.114-1](https://ungoogled-software.github.io/ungoogled-chromium-binaries/) to [92.0.4515.107](https://github.com/macchrome/winchrome/releases/tag/v92.0.4515.107-r885287-Win64), that's theoretically built from the same source code by other developer + "Safe Browser" functionality isn't cut off.

I didn't expected that the settings will be lost 'cause I didn't change my browser, but they were lost.

Luckily I had exported settings but importing them doesn't show any activity or difference - there is even no activity in the _Network_ tab of _Chrome DevTools_. Logs also doesn't contain any records about import.

Here's the [attached and pretty-printed settings](https://github.com/ActivityWatch/aw-server/files/6905419/aw-category-export.-.Copy.zip) (some sensitive info has been cut off w/o loss in constistency)