fix(Core/Movement): (#7008)

- Get zone/area IDs from vmap data in the liquid update
- Add new method Map::getFullVMapDataForPosition to get area info and liquid info in a single vmap lookup
- Adjust GetZoneId/GetAreaId on WorldObject to always return these cached fields.
- Clean up liquid state handling on Unit and Player
- Implemented getting area id from gameobject spawns.
- Removed old core related to getting movement flags dependent on environment.
- Movement flags are now processed more precisely and dynamically.

Original source: TrinityCore.

- Closes #5086
- Updates #2208.

src/server/game/Movement/MovementGenerators/FleeingMovementGenerator.cpp

@@ -48,7 +48,7 @@ bool FleeingMovementGenerator<T>::_getPoint(T* owner, float& x, float& y, float&
     if (!owner)
         return false;
 
-    const Map* _map = owner->GetBaseMap();
+    const Map* _map = owner->GetMap();
 
     x = owner->GetPositionX();
     y = owner->GetPositionY();