feat:implement disableActorFade patch

Consider implementing the disableActorFade patch, as found in the MIT licensed source code from flatrim SSEDisplayTweaks [here](https://github.com/SlavicPotato/SSEDisplayTweaks/blob/41668a7497872366cb663d8c353f07e1001fa1c1/SSETweaks/misc.cpp#L170C3-L190). This should guarantee that NPCs do not vanish like I have seen happen frequently with followers running into me in game.