refactor(Core): Add definition file for area table entries. (#22054)

src/server/game/Cache/WhoListCacheMgr.cpp

@@ -16,6 +16,7 @@
  */
 
 #include "WhoListCacheMgr.h"
+#include "AreaDefines.h"
 #include "GuildMgr.h"
 #include "ObjectAccessor.h"
 #include "World.h"
@@ -56,7 +57,7 @@ void WhoListCacheMgr::Update()
 
         _whoListStorage.emplace_back(player->GetGUID(), player->GetTeamId(), player->GetSession()->GetSecurity(), player->GetLevel(),
             player->getClass(), player->getRace(),
-            (player->IsSpectator() ? 4395 /*Dalaran*/ : player->GetZoneId()), player->getGender(), player->IsVisible(),
+            (player->IsSpectator() ? AREA_DALARAN : player->GetZoneId()), player->getGender(), player->IsVisible(),
             widePlayerName, wideGuildName, playerName, guildName);
     }
 }