[New Feature] Allow OpenTopped Passengers unable to self-acquire target

[deathreaperz]

OpenTopped Vehicles like Battle Fortress and some mod units have their passengers automatically acquire targets while the vehicle moving or even pulled by Magnetrons.

Some mod vehicles use OpenTopped Passengers logic for it's "third/extra" weapon, it will be great if we have a logic that can disable self-acquire for passengers, or even passengers inside only follow the vehicle's command!

[VEHICLE]
Passengers.CanPassiveAquire=(bool) ;def depends on the infantry. If set to no, then all infantry inside the vehicle won't self-acquire target