[GEN][ZH] Unblock keyboard input on CRC mismatch

[Caball009]

I noticed this issue with a custom map that has a scripted intro readme that stays put for a couple of seconds. Keyboard input is ignored and the mouse cursor is hidden for the duration of the readme. If a replay CRC mismatch is detected during the showing of the readme file, the game is paused and it's annoying to get out of it because user input remains limited.

This PR checks the mouse visibility and if the mouse cursor is hidden on CRC mismatch, the options menu is toggled instead of pausing the game. In progress.

Reproduction steps:

1. Use map [Mod] Rebel Uprise 2 v10 (This map should be a part of the GenPatcher 'modded' map pack)
2. Create a replay file, which doesn't have to be longer than 10 - 15 seconds.
   Shouldn't require more than just the local host in a multiplayer match.
3. Remove the map.ini file from the custom map (or do something else that'll instantly trigger a CRC mismatch).
4. Play the replay and get an instant CRC mismatch.
5. The game pauses and blocks keyboard input, and the mouse cursor is hidden.
6. The easiest way to get out of this is by clicking on the button next to the map to open the menu. Even though the mouse cursor is hidden, the button lights up if you're hovering over it with the mouse.

[Caball009]

The new change doesn't make the mouse visible, but I think that's ok. It does unblock keyboard input, so pressing ESC works again. Opening the options menu always makes the mouse visible.