This reverts commit 19a00b2.

See issue reported p1743440666861309-slack-C07418EJ0

Proposed Changes

At some point, we made a change to improve a performance issue noticed on Learnomattic.

Now it's causing an issue in atomic sites on WPCOM, not ordering the courses at all. Given that currently Learnomattic doesn't have a page to list all the courses, it should not be a problem anymore, and we should prioritize user sites.

If we face this performance issue again for a specific type of environment, we need to find a different solution. Or if the reverted solution still works in this environment, we could try a conditional with the 2 approaches depending on the environment.

Testing Instructions

1. Apply this change on atomic.
2. Create some courses.
3. Navigate to WP Admin > Sensei LMS > Courses.
4. Click on "Order Courses".
5. Reorder your courses.
6. Visit your courses list on your site frontend.
7. Check that the reordering worked properly.
8. Repeat the reorder, and make sure it still works (I noticed that sometimes it was working the first time).

Pre-Merge Checklist

• PR title and description contain sufficient detail and accurately describe the changes
• Adheres to coding standards (PHP, JavaScript, CSS, HTML)
• All strings are translatable (without concatenation, handles plurals)
• Follows our naming conventions (P6rkRX-4oA-p2)
• Hooks (p6rkRX-1uS-p2) and functions are documented
• New UIs are responsive and use a mobile-first approach
• Code is tested on the minimum supported PHP and WordPress versions