Force refresh no longer updates previously fetched entries

[LiveLM]

Hello 👋
According to #1989 hitting "Refresh" on a feed should apply filter changes and other settings to all previously fetched entries, but it seems this functionality got broken somewhere in between.
Tested with the latest Docker release:

Version: 2.1.1
Git Commit 382885f1
Build Date: 2024-03-10T17:54:11+0000
Postgres version: 15.6 (Debian 15.6-1.pgdg120+2)
Go version: go1.22.1

How to Reproduce

1. Add https://fossphones.com/feed.xml as a feed.
2. Open an entry. Notice that it only has a summary.
3. Edit the feed, enable "Fetch original content" and save.
4. Refresh the feed.

Expected behavior
Previous entries are updated to reflect the new settings.

Current behavior
Previous entries are not updated at all.

Video Demo

Screencast_20240315_002017.webm

If you need logs or anything, please let me know. Thanks!