Use Giants passenger config if any

[yumi-modding]

These basegame vehicles can get passengers with Kubota DLC

./johnDeere/xuv865M/xuv865M.xml:        <passengerSeats>
./lizard/pickup1986/pickup1986.xml:        <passengerSeats>
./lizard/pickup2017/pickup2017.xml:        <passengerSeats>
./mack/anthem/anthem.xml:        <passengerSeats>
./mack/pinnacle/pinnacle.xml:        <passengerSeats>
./mack/superliner1979/superliner1979.xml:        <passengerSeats>
./mahindra/retriever/retriever.xml:        <passengerSeats>
./man/tgs18500/tgs18500.xml:        <passengerSeats>
./man/tgx26640/tgx26640.xml:        <passengerSeats>
./prinoth/leitwolf/leitwolf.xml:        <passengerSeats>

Example of xml config:

  <passengerSeats>
            <passengerSeat node="passengerSeat01" exitPoint="passengerSeat01ExitPoint" outdoorCameraIndex="1">
                <camera node="passengerSeat01Camera" rotatable="true" limit="true" rotMinX="-1.1" rotMaxX="0.4" transMin="0" transMax="0" useMirror="true" isInside="true" positionSmoothingParameter="0" shadowFocusBox="shadowFocusBox"/>
                <characterNode node="passengerSeat01PlayerSkin" cameraMinDistance="0.5" spineRotation="-90 0 90">
                    <target ikChain="leftArm"   targetNode="passengerSeat01PlayerLeftHand" poseId="flatFingers"/>
                    <target ikChain="rightArm"  targetNode="passengerSeat01PlayerRightHand" poseId="flatFingers"/>
                    <target ikChain="leftFoot"  targetNode="passengerSeat01PlayerLeftFoot" />
                    <target ikChain="rightFoot" targetNode="passengerSeat01PlayerRightFoot" />
                </characterNode>
            </passengerSeat>
        </passengerSeats>