Common / Medical - Fix loading patients into turret only seats

[BaerMitUmlaut]

When merged this pull request will:

• Fix Can't load patient into the co-pilot seat of an AH-6 #2965 (from 2015 😄)
• Fix fnc_loadperson.sqf / fnc_loadpersonlocal.sqf #4937
• Additionally, add a failsave when the eject action fails

I tested this with the AH-6 and eject only did not work before. This might fix this problem on other vehicles, too, not sure what causes it.

[PabstMirror]

Not working with MBT_04

loadPersonLocal line 24 is wrong (I think this is my fault from an old PR), it should be:

if ((_vehicle emptyPositions "cargo" > 0) && {!(_unit getVariable ['ACE_isUnconscious', false]) || {(getNumber (configFile >> "CfgVehicles" >> (typeOf _vehicle) >> "ejectDeadCargo")) == 0}}) then {

this was causing cargo loading path to always happen based on ejectDeadCargo, ignoring if there was room