Core/LFG: Sanitize LFG roles sent by clients

Port From (https://github.com/TrinityCore/TrinityCore/commit/4431df1f136372319dd6f73c4d28c4e0ef0dcb2c)

Source/Framework/Constants/LFGConst.cs

@@ -26,7 +26,8 @@ namespace Framework.Constants
         Leader = 0x01,
         Tank = 0x02,
         Healer = 0x04,
-        Damage = 0x08
+        Damage = 0x08,
+        Any = Leader | Tank | Healer | Damage
     }
 
     public enum LfgUpdateType

Source/Game/DungeonFinding/LFGManager.cs

@@ -357,6 +357,13 @@ namespace Game.DungeonFinding
             if (!player || player.GetSession() == null || dungeons.Empty())
                 return;
 
+            // At least 1 role must be selected
+            if ((roles & (LfgRoles.Tank | LfgRoles.Healer | LfgRoles.Damage)) == 0)
+                return;
+
+            // Sanitize input roles
+            roles &= LfgRoles.Any;
+
             Group grp = player.GetGroup();
             ObjectGuid guid = player.GetGUID();
             ObjectGuid gguid = grp ? grp.GetGUID() : guid;
@@ -669,6 +676,9 @@ namespace Game.DungeonFinding
             if (roleCheck == null)
                 return;
 
+            // Sanitize input roles
+            roles &= LfgRoles.Any;
+
             bool sendRoleChosen = roleCheck.state != LfgRoleCheckState.Default && !guid.IsEmpty();
 
             if (guid.IsEmpty())