BeamNGpy should not ignore cling when spawning a vehicle

[alessiogambi]

Spawning a vehicle (either statically or dynamically) on a map where's the ground level is below 0 results in the cars dropped in the air.

Steps to reproduce:

• install tig level from here or create a level for which the ground level is below 0. For tig, the ground level is -28.0
• create a new scenario and add a car at (0,0,0), set cling=True (this should be the default value anyway)
• Start the simulation and check the car appears "in the air"

 with BeamNGpy('localhost', 64256) as bng:
            scenario = Scenario('tig', 'test_scenario_1')
            # This car is "on-the ground"
            vehicle_1 = Vehicle('vehicle_1', model='etk800', licence='ground', color="red")
            orig = (0, 0, -28.0)
            scenario.add_vehicle(vehicle_1, cling=0, pos=orig, rot=None, rot_quat=(0, 0, 1, 0))
            # This car is "in-the-air" and crash into the ground
            vehicle_2 = Vehicle('vehicle_2', model='etk800', licence='Fly')
            orig = (10, 10, 0.0)
            scenario.add_vehicle(vehicle_2, cling=True, pos=orig, rot=None, rot_quat=(0, 0, 1, 0))
            scenario.make(bng)
            bng.load_scenario(scenario)
            bng.start_scenario()
            input('Press enter when done...')            
            

[alessiogambi]

I tried placing a vehicle above the ground level on the Utah map and it works fine, so I suspect the issue might be placing vehicles below the 0.0 level.