fix: allow maximum 3 open-source apps while common apps are active
Description
When common apps are active, users will see maximum 3 open-source apps by default. If users click on a filter, all open-source apps will be visible.
When common apps are disabled in the Settings, all open-source apps will be loaded and visible.
The logic for replacing common apps with their F-Droid counterparts is removed. Those apps will be visible as part of common apps.
Same goes for PWAs.
Screenshots
Screen_recording_20251127_135057-App_Lounge
Technical details
Tests
Issues
https://gitlab.e.foundation/e/os/backlog/-/issues/3851