Fix Genesis City featured place rankings being overwritten daily

[decentraland-bot]

Description

Genesis City scenes set as featured (highlighted) with a manual ranking are being silently overwritten each day, causing them to fall to the bottom of the Featured Places list. Scenes in Worlds are not affected — only Genesis City scenes.

The affected scenes (KoA / Knights of Antrom and Old McTigers) are manually ranked at positions 2 and 3, but each day they reset to positions 21 and 22.

This started around Wednesday 2026-08-20 and reproduces at 100%.

Steps to Reproduce

1. Manually set a featured Genesis City scene's ranking via the admin API (e.g. KoA at position 2).
2. Wait until the following day.
3. Check the Featured Places list — the scene will have moved to the bottom.

Expected Behavior

Manually assigned rankings for Genesis City featured scenes persist and are not overwritten by any background sync or external process.

Actual Behavior

Genesis City scene rankings reset daily. Worlds scene rankings are unaffected. The admin ranking must be manually re-applied each day to restore the correct order.

Context

• Known risk area: highlighted Genesis City rankings can be overwritten by external/admin/stale sync because the API has no ranking lock.
• Worlds highlighted places use a separate /api/worlds endpoint and appear unaffected.
• The regression started around 2026-08-20.

Affected Scenes

Scene	Expected position	Actual position after reset
Knights of Antrom (KoA)	2	21
Old McTigers	3	22

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Reported by Bay Backner

Requested by Dawid Krajewski (<@U079GRD9WTZ>)