Tournament match seeds need to be predictable

[Debilski]

I’m not a big fan of having the tournament predictable (I think it is boring if we can predict the outcome from the seed alone) but if we want to actually ensure this, then we must either save the random state in the tournament state file (that is used for recovery in case of error) or make the rng state predictable (like generate the game seed from the match id + the initial seed).