Fix playtime on player tab getting set to Unknown (#28876)

Update play time on admin panel player tab after db loads

Content.Server/Administration/Systems/AdminSystem.cs

@@ -4,7 +4,6 @@ using Content.Server.Chat.Managers;
 using Content.Server.Forensics;
 using Content.Server.GameTicking;
 using Content.Server.Hands.Systems;
-using Content.Server.IdentityManagement;
 using Content.Server.Mind;
 using Content.Server.Players.PlayTimeTracking;
 using Content.Server.Popups;
@@ -70,6 +69,7 @@ namespace Content.Server.Administration.Systems
 
             _playerManager.PlayerStatusChanged += OnPlayerStatusChanged;
             _adminManager.OnPermsChanged += OnAdminPermsChanged;
+            _playTime.SessionPlayTimeUpdated += OnSessionPlayTimeUpdated;
 
             // Panic Bunker Settings
             Subs.CVar(_config, CCVars.PanicBunkerEnabled, OnPanicBunkerChanged, true);
@@ -200,6 +200,7 @@ namespace Content.Server.Administration.Systems
             base.Shutdown();
             _playerManager.PlayerStatusChanged -= OnPlayerStatusChanged;
             _adminManager.OnPermsChanged -= OnAdminPermsChanged;
+            _playTime.SessionPlayTimeUpdated -= OnSessionPlayTimeUpdated;
         }
 
         private void OnPlayerStatusChanged(object? sender, SessionStatusEventArgs e)
@@ -446,5 +447,10 @@ namespace Content.Server.Administration.Systems
 
             _gameTicker.SpawnObserver(player);
         }
+
+        private void OnSessionPlayTimeUpdated(ICommonSession session)
+        {
+            UpdatePlayerList(session);
+        }
     }
 }

Content.Server/Players/PlayTimeTracking/PlayTimeTrackingManager.cs

@@ -81,6 +81,8 @@ public sealed class PlayTimeTrackingManager : ISharedPlaytimeManager, IPostInjec
 
     public event CalcPlayTimeTrackersCallback? CalcTrackers;
 
+    public event Action<ICommonSession>? SessionPlayTimeUpdated;
+
     public void Initialize()
     {
         _sawmill = Logger.GetSawmill("play_time");
@@ -217,6 +219,7 @@ public sealed class PlayTimeTrackingManager : ISharedPlaytimeManager, IPostInjec
         };
 
         _net.ServerSendMessage(msg, pSession.Channel);
+        SessionPlayTimeUpdated?.Invoke(pSession);
     }
 
     /// <summary>