fix: use thumbnail_uuid for the thumbnail instead of s3_id

[costowell]

What

• Change from using the s3_id to thumbnail_uuid
• This code is directly copied from the dir thumbnail function

Why

thumbnail_uuid is pretty much always equal to s3_id (save for the file extension which for some reason exists in a column called thumbnail_uuid)

SELECT s3_id, thumbnail_uuid FROM public.files WHERE s3_id != regexp_replace(thumbnail_uuid, '\.[^.]+$', '')

This query yields a single row - the row I modified to get a higher quality video in manually because of our 1Gb upload cap.

Test Plan

• Noah

Env Vars

N/A

Documentation

Shnope

Checklist

• Tested all changes locally

[BigSpaceships]

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