AxisAlignedBoundingBox: set aabbPointsDirty on transformFrom

When updateWorldBounds was called on an Entity, it computes the new bounds by calling worldBounds.transformFrom(bounds, sceneTransform), but the aabbPoints would not be updated.

src/away3d/bounds/AxisAlignedBoundingBox.as

@@ -322,6 +322,8 @@ package away3d.bounds
 			_max.x = _centerX + _halfExtentsX;
 			_max.y = _centerY + _halfExtentsY;
 			_max.z = _centerZ + _halfExtentsZ;
+
+			_aabbPointsDirty = true;
 		}
 	}
 }