OverlapCallback. getEventType always return OverlapStart

[Evgeny Tumanov]

` class OnOverlap : public OverlapCallback
{
public:
int pos = 0;
virtual void onOverlap (CallbackData& callbackData)
{
for (uint32 i = 0; i < callbackData.getNbOverlappingPairs (); i++)
{
OverlapPair pair = callbackData.getOverlappingPair (i);
DG ("[%i] onOverlap. EventType: %i\n", pos, pair.getEventType ());
}
}
};

TEST_METHOD (Collide_NonRB_NonRB)
{
    PhysicsCommon physicsCommon; 
    PhysicsWorld* world = physicsCommon.createPhysicsWorld ();
    SphereShape* spShape = physicsCommon.createSphereShape (2.0f);

    CollisionBody* bodyA = world->createCollisionBody (rp3d::Transform::identity());
    bodyA->setTransform (Transform ({0,0,0}, Quaternion::identity ()));
    var collider = bodyA->addCollider (spShape, Transform::identity ());

    CollisionBody* bodyB = world->createCollisionBody (rp3d::Transform::identity ());
    bodyB->setTransform (Transform ({0,0,0}, Quaternion::identity ()));
    collider = bodyB->addCollider (spShape, Transform::identity ());

    OnOverlap overlapHandler;
    for (int i = -5; i < +5; i++)
    {
        overlapHandler.pos = i;
        // move bodyB to +X   
        bodyB->setTransform (Transform ({(float)i,0,0}, Quaternion::identity ()));
        world->testOverlap (overlapHandler);
        world->update (1);
    }
}`

getEventType() from callback, will return only OverlapStart. No OverlapStay, no OverlapExit - only enter. Please, comment it.