Marking as unread doesn't work with miniflux backend

[gudvinr]

Describe the bug

When I mark entry as unread, it still getting marked as read.

To Reproduce
Steps to reproduce the behavior:

1. Open some entry
2. Mark as unread
3. Mark all entries in a group as read

Expected behavior

When you mark entry as unread, it should not be marked as read.

Screenshots
If applicable, add screenshots to help explain your problem.

Device info

• Device: OnePlus 7 Pro
• OS: Android 14 / LineageOS 21
• Version: v4.2.9

Additional context

I see this issue when use miniflux backend. It doesn't happen with the old reader.