Optimize list sorting

[DIYgod]

Clear and concise description of the problem

To ensure that new content is always at the top, the list is currently sorted by insertion time, which causes the timeline not to follow the publication time.

Suggested solution

Switch to two sorting factors:

• Unread content is displayed before read content
• If both are unread or both are read content, they are sorted by publication time

Alternative

No response

Additional context

No response

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• This issue is valid

[linear]

FOL-1259 Optimize list sorting