[10529] Water level in movement use fixes.

* Move selection allowed upper and lower heights for target point
  into near point core function used for contact/close point selection.
  Selection base at possibility target point searcher fly/swim(or walk by water bottom).
* Use vamp water level data so have proper water level in instances in movements.
* Use increased ground search distance for water level case.

src/game/ConfusedMovementGenerator.cpp

@@ -59,7 +59,7 @@ ConfusedMovementGenerator<T>::Initialize(T &unit)
             i_waypoints[idx][1] = idx > 0 ? i_waypoints[idx-1][1] : y;
         }
 
-        unit.UpdateGroundPositionZ(i_waypoints[idx][0],i_waypoints[idx][1],z);
+        unit.UpdateAllowedPositionZ(i_waypoints[idx][0],i_waypoints[idx][1],z);
         i_waypoints[idx][2] =  z;
     }