[boskid] [0.17.68] Train takes wrong path when stations are on both sides

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[boskid] [0.17.68] Train takes wrong path when stations are on both sides

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Issue: Based on https://wiki.factorio.com/Railway/Train_path_finding, train should choose upper path with 3 stations ("train stop that is not the destination" -> 3*2000 penalty). Instead it chooses bottom path with 4 stations. (4*2000 penalty)
Expected: Train should choose upper path.

Ref: 75107 (more description, investigation, proposed fix)

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