Make sure used keys are saved into a file.

[molnard]

In addition to this #10711.

Making sure to save the used keys state to file - right after the modification.

[molnard]

@lontivero The solution here is dirty but the interface is not letting me touch the file directly. However, it is not worse than before.

[lontivero]

If you want to make sure the keys' state are always persisted immediately then you should pass the this keymanaget to this method:

https://github.com/zkSNACKs/WalletWasabi/blob/master/WalletWasabi/Blockchain/Keys/KeyManager.cs#L503

[molnard]

keys' state are always persisted immediately

I did not say always. I want to do that only here.

https://github.com/zkSNACKs/WalletWasabi/pull/10780/files#diff-28444f49c77fd0c2cd05f91515914d63fc3c9264ff1f24a56b2fc8e8167df850R523.

[lontivero]

The thing is that CoinJoinManager shouldn't even know about the persistence mechanism. The KeyManager is the one that should abstract all that. If the changes in the key state have to be persisted in all or some situations and that is not happening then it is the KeyManager that have to be improved and not the CoinJoinManager.

[molnard]

@lontivero I tried my best. I think it is even better because any time we use TrySetScriptStates it is saved in the file.