feat(Core/Battleground): rework bg queue system (#10817)

src/server/scripts/Commands/cs_reload.cpp

@@ -215,7 +215,7 @@ public:
     static bool HandleReloadBattlegroundTemplate(ChatHandler* handler)
     {
         LOG_INFO("server.loading", "Re-Loading Battleground Templates...");
-        sBattlegroundMgr->CreateInitialBattlegrounds();
+        sBattlegroundMgr->LoadBattlegroundTemplates();
         handler->SendGlobalGMSysMessage("DB table `battleground_template` reloaded.");
         return true;
     }