Refactor lobby status (#10550)

Content.Server/GameTicking/Commands/ObserveCommand.cs

@@ -1,4 +1,5 @@
 using Content.Shared.Administration;
+using Content.Shared.GameTicking;
 using Robust.Server.Player;
 using Robust.Shared.Console;
 
@@ -26,10 +27,15 @@ namespace Content.Server.GameTicking.Commands
                 return;
             }
 
-            if (ticker.PlayersInLobby.ContainsKey(player))
+            if (ticker.PlayerGameStatuses.TryGetValue(player.UserId, out var status) &&
+                status != PlayerGameStatus.JoinedGame)
+            {
                 ticker.MakeObserve(player);
+            }
             else
+            {
                 shell.WriteError($"{player.Name} is not in the lobby.   This incident will be reported.");
+            }
         }
     }
 }