[bug] it doesn't remember the app filters after re-opening the app

[throwaway26425]

Prerequisites
[x] My request is not part of an existing issue.
[x] I have checked the Obtainium Wiki.
[x] My request is an actual bug and not intended behaviour.

Describe the bug
Obtainium doesn't seem to remember the app filters after re-opening the app.

To Reproduce

1. go to the "Apps" tab.
2. change a filter (e.g. disable "Up to Date Apps" filter)
3. close and re-open the app.
4. the filter will reset to default.

Screenshots and Logs

20240329_195112.mp4

Please complete the following information:

• Device: Samsung Galaxy A10
• OS: Android 9
• Obtainium Version: 1.1.0

Additional context

[ImranR98]

Not a bug, but we can keep it open as a feature req.