Reset completestop in hardreset

If you manage to get softlocked by being stuck in completestop, the next
thing you'll notice is that quitting to the menu or loading back in will
not reset this.

So you can actually softlock yourself in 2.3 by doing the trinket
cutscene, then quitting to the menu (because 2.3 lets you open the pause
menu during completestop). This is a bug, and should be fixed.

desktop_version/src/Script.cpp

@@ -3606,6 +3606,7 @@ void scriptclass::hardreset(void)
 	}
 
 	game.pausescript = false;
+	game.completestop = false;
 
 	game.flashlight = 0;
 	game.screenshake = 0;