Game support: unique constraint violation when mod provides supported_games

[rubenwardy]

psycopg2.errors.UniqueViolation: duplicate key value violates unique constraint "_package_game_support_uc"
DETAIL: Key (game_id, package_id)=(30, 3670) already exists.

contentdb=# SELECT * FROM package_game_support WHERE package_id=3670;
id | package_id | game_id | supports | confidence
--------+------------+---------+----------+------------
923310 | 3670 | 30 | t | 10
923311 | 3670 | 117 | t | 10
923312 | 3670 | 2506 | t | 10
(3 rows)

https://gitgud.io/blut/target/-/tree/f1239388be70d2e998dab08a3b743ac0ada6ad1a