Revert Visibility Notifier changes (#17682)

* Revert "fix(Core/Grid): Implement missing GridUnload setting (#17569)"

This reverts commit 79b39f9655.

* Revert "fix(Core/Grid): Address bugs and performance issues introduced by visibility notifier implementation (#17480)"

This reverts commit 60e27511c5.

* Revert "fix(Core): GridCleanUpDelay Log (#17436)"

This reverts commit 90b16ca065.

* Revert "feat(Core/Grids): Implement visibility notifier (#15919)"

This reverts commit 2779833768.

src/server/game/Entities/DynamicObject/DynamicObject.cpp

@@ -47,6 +47,14 @@ DynamicObject::~DynamicObject()
 
 void DynamicObject::CleanupsBeforeDelete(bool finalCleanup /* = true */)
 {
+    if (Transport* transport = GetTransport())
+    {
+        transport->RemovePassenger(this);
+        SetTransport(nullptr);
+        m_movementInfo.transport.Reset();
+        m_movementInfo.RemoveMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
+    }
+
     WorldObject::CleanupsBeforeDelete(finalCleanup);
 }
 
@@ -80,6 +88,9 @@ void DynamicObject::RemoveFromWorld()
 
         UnbindFromCaster();
 
+        if (Transport* transport = GetTransport())
+            transport->RemovePassenger(this, true);
+
         WorldObject::RemoveFromWorld();
 
         GetMap()->GetObjectsStore().Remove<DynamicObject>(GetGUID());
@@ -114,15 +125,17 @@ bool DynamicObject::CreateDynamicObject(ObjectGuid::LowType guidlow, Unit* caste
     SetFloatValue(DYNAMICOBJECT_RADIUS, radius);
     SetUInt32Value(DYNAMICOBJECT_CASTTIME, GameTime::GetGameTimeMS().count());
 
-    if (IsWorldObject())
-        setActive(true);    //must before add to map to be put in world container
-
     if (!GetMap()->AddToMap(this, true))
     {
         // Returning false will cause the object to be deleted - remove from transport
         return false;
     }
 
+    if (IsWorldObject())
+    {
+        setActive(true);
+    }
+
     return true;
 }