fix(Core/Battlegrounds): MinLevel and MaxLevel from `battelground… (#12880)

fix(Core/Battlegrounds): `MinLevel` and `MaxLevel` from `battelground_template` should be taken into account while joining bg queue.

Fixes #6781

src/server/game/Groups/Group.cpp

@@ -1986,6 +1986,11 @@ GroupJoinBattlegroundResult Group::CanJoinBattlegroundQueue(Battleground const*
         // don't let Death Knights join BG queues when they are not allowed to be teleported yet
         if (member->getClass() == CLASS_DEATH_KNIGHT && member->GetMapId() == 609 && !member->IsGameMaster() && !member->HasSpell(50977))
             return ERR_GROUP_JOIN_BATTLEGROUND_FAIL;
+
+        if (!member->GetBGAccessByLevel(bgTemplate->GetBgTypeID()))
+        {
+            return ERR_BATTLEGROUND_JOIN_TIMED_OUT;
+        }
     }
 
     // for arenas: check party size is proper

src/server/game/Handlers/BattleGroundHandler.cpp

@@ -187,6 +187,10 @@ void WorldSession::HandleBattlemasterJoinOpcode(WorldPacket& recvData)
         {
             err = ERR_BATTLEGROUND_NONE;
         }
+        else if (!_player->GetBGAccessByLevel(bgTypeId))
+        {
+            err = ERR_BATTLEGROUND_NONE;
+        }
 
         if (err <= 0)
         {
@@ -236,6 +240,10 @@ void WorldSession::HandleBattlemasterJoinOpcode(WorldPacket& recvData)
             {
                 err = ERR_BATTLEGROUND_NONE;
             }
+            else if (!member->GetBGAccessByLevel(bgTypeId))
+            {
+                err = ERR_BATTLEGROUND_JOIN_TIMED_OUT;
+            }
 
             if (err < 0)
             {