Vehicle turrets can be aimed and fired from control tile without power

I found a APC without any power whatsoever to speak off but a loaded browing.
Using the control tile i can manually aim and fire the turret and zombies.

Correct behavior: Unless you actually MAN the turret, i dont think you should be able to "remotely" control it via dashboard unless the vehicle in question has a powered battery.

Reproduce the issue using an APC with no battery power, a loaded turret, and its control tile; verify that aiming and firing are possible without manually manning the turret. Trace the vehicle control-tile and turret interaction paths. Done means remote control is blocked without vehicle power unless the turret is actually manned, with the reported scenario covered by a regression test.

Written by the indexing model from the issue text.