Game allows entering high score when cheat was enabled during previous game

[Takiro]

So I was playing around with the cheats and normally high scores are disabled when a cheat was used during a game. But I noticed at some point it still let me enter one. So I did some testing and this is how you can use some cheats (the ones you can toggle) and still have a high score dialog when game over.

1. start program
2. press New Game
3. activate a cheat you can toggle (like hidden test or easy mode)
4. press New Game again
5. play with cheats and loose when having a high score

Expected result: Games shows high score on game board but dialogue does not open.

Actual result: game shows high score dialogue and lets you enter a name like in normal game

First I suspected it to be a mistake when when switching from demo mode to a new game when the cheat was activated in demo mode but while writing this I dug deeper and actually found this was even mentioned as an oddity in the code

	// Some of the control cheats persist across games.
	// Was this loose anti-cheat by design?
	CheatsUsed = 0;

I think it would be better to recheck if cheats are active when a new game starts and set CheatsUsed accordingly, what do you think?