Core/Movement: Correctly fixed flying npcs falling to ground, no more glitches with this

Signed-off-by: Subv2112 <s.v.h21@hotmail.com>

src/server/game/Entities/Object/Object.cpp

@@ -2526,7 +2526,7 @@ void WorldObject::GetNearPoint(WorldObject const* /*searcher*/, float &x, float
 {
     GetNearPoint2D(x, y, distance2d+searcher_size, absAngle);
     z = GetPositionZ();
-    UpdateGroundPositionZ(x, y, z);
+    UpdateAllowedPositionZ(x, y, z);
 
     /*
     // if detection disabled, return first point