fixes unit tests #2499

Map renderings

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Maps with diff:

MODIFIED - _maps/RandomRuins/SpaceRuins/hellfactory.dmm (Z-level: 1)

Modified region: (1, 16) -> (9, 23)

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MODIFIED - _maps/shuttles/independent/independent_pillbottle.dmm (Z-level: 1)

Modified region: (30, 1) -> (32, 2)

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MODIFIED - _maps/shuttles/independent/independent_rube_goldberg.dmm (Z-level: 1)

Modified region: (22, 6) -> (32, 17)

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MODIFIED - _maps/shuttles/subshuttles/independent_superpill.dmm (Z-level: 1)

Modified region: (1, 1) -> (3, 2)

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MODIFIED - _maps/shuttles/syndicate/syndicate_twinkleshine.dmm (Z-level: 1)

Modified region: (21, 7) -> (25, 11)

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