order_by field not working in /api/worlds

[braianj]

The order_by field in https://places.decentraland.org/api/worlds is not working as expected.

• When listing worlds, the values updated_at, most_active, and like_score for order_by do not work.
• The endpoint returns the same results regardless of which value is passed, even with a random value or if the order_by parameter is omitted.

Expected behavior:
The results should be properly ordered according to the specified order_by value.