Don't toggle sprint/sneak if it escapes the game

When using the Toggle sneak/sprint functionality with keys taht are also used in system shortcuts like Ctrl-Alt-Right, this escapes the game (opens the menu) and also toggles the associated sneak/sprint. This makes things a bit confusing when back to game and needs to toggle-back each time or check what is the current status.

So I think the game should just ignore keys pressed when leading to escaping the game (checking on key release that we are still in game)