[DONE] Holding a camera direction during the enemy turn causes the camera to keep going

[Arctic]

To recreate this bug, just hold any arrow key while clicking "End Turn". The camera will continue to move in the selected direction for the entire enemy turn. It will only stop moving once it hits a boundary or when, in the player's turn, the direction is reset. This produces a very hard-to-watch effect as the camera is constantly being reset on the enemy's position during their turn.

[Meridian]

Done: https://github.com/MeridianOXC/OpenXcom/commit/ddfe762a67a10555ccb4333d8adeaaa935799ec3