Core/Objects: use the actual collision height of players and creatures to get more accurate liquid status results

Port From (https://github.com/TrinityCore/TrinityCore/commit/d5daa2ad49a5a5d23ec4fae7508998ff9b1b6ad1)

Source/Game/Entities/Creature/Creature.cs

@@ -823,7 +823,13 @@ namespace Game.Entities
                 Log.outError(LogFilter.Unit, $"Creature.Create: given coordinates for creature (guidlow {guidlow}, entry {entry}) are not valid ({pos})");
                 return false;
             }
-            UpdatePositionData();
+
+            {
+                // area/zone id is needed immediately for ZoneScript::GetCreatureEntry hook before it is known which creature template to load (no model/scale available yet)
+                PositionFullTerrainStatus positionData = new();
+                GetMap().GetFullTerrainStatusForPosition(GetPhaseShift(), GetPositionX(), GetPositionY(), GetPositionZ(), positionData, LiquidHeaderTypeFlags.AllLiquids, MapConst.DefaultCollesionHeight);
+                ProcessPositionDataChanged(positionData);
+            }
 
             // Allow players to see those units while dead, do it here (mayby altered by addon auras)
             if (cinfo.TypeFlags.HasAnyFlag(CreatureTypeFlags.GhostVisible))

Source/Game/Entities/Object/WorldObject.cs

@@ -115,7 +115,7 @@ namespace Game.Entities
         public void UpdatePositionData()
         {
             PositionFullTerrainStatus data = new();
-            GetMap().GetFullTerrainStatusForPosition(_phaseShift, GetPositionX(), GetPositionY(), GetPositionZ(), data, LiquidHeaderTypeFlags.AllLiquids);
+            GetMap().GetFullTerrainStatusForPosition(_phaseShift, GetPositionX(), GetPositionY(), GetPositionZ(), data, LiquidHeaderTypeFlags.AllLiquids, GetCollisionHeight());
             ProcessPositionDataChanged(data);
         }
 

Source/Game/Entities/Player/Player.cs

@@ -213,8 +213,6 @@ namespace Game.Entities
                 }
             }
 
-            UpdatePositionData();
-
             // set initial homebind position
             SetHomebind(this, GetAreaId());
 
@@ -236,6 +234,7 @@ namespace Game.Entities
             SetGender(createInfo.Sex);
             SetPowerType(powertype);
             InitDisplayIds();
+            UpdatePositionData();
             if ((RealmType)WorldConfig.GetIntValue(WorldCfg.GameType) == RealmType.PVP || (RealmType)WorldConfig.GetIntValue(WorldCfg.GameType) == RealmType.RPPVP)
             {
                 AddPvpFlag(UnitPVPStateFlags.PvP);