Remove all usage of CatchUnobservedExceptions

This should no longer be required with the recent framework side change
that stops a game from crashing on unobserved exceptions
(https://github.com/ppy/osu-framework/pull/4171).

osu.Game/Extensions/TaskExtensions.cs

@@ -1,36 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-#nullable enable
-
-using System;
-using System.Threading.Tasks;
-using osu.Framework.Extensions.ExceptionExtensions;
-using osu.Framework.Logging;
-
-namespace osu.Game.Extensions
-{
-    public static class TaskExtensions
-    {
-        /// <summary>
-        /// Denote a task which is to be run without local error handling logic, where failure is not catastrophic.
-        /// Avoids unobserved exceptions from being fired.
-        /// </summary>
-        /// <param name="task">The task.</param>
-        /// <param name="logAsError">
-        /// Whether errors should be logged as errors visible to users, or as debug messages.
-        /// Logging as debug will essentially silence the errors on non-release builds.
-        /// </param>
-        public static void CatchUnobservedExceptions(this Task task, bool logAsError = false)
-        {
-            task.ContinueWith(t =>
-            {
-                Exception? exception = t.Exception?.AsSingular();
-                if (logAsError)
-                    Logger.Error(exception, $"Error running task: {exception?.Message ?? "(unknown)"}", LoggingTarget.Runtime, true);
-                else
-                    Logger.Log($"Error running task: {exception}", LoggingTarget.Runtime, LogLevel.Debug);
-            }, TaskContinuationOptions.NotOnRanToCompletion);
-        }
-    }
-}

osu.Game/Online/Multiplayer/StatefulMultiplayerClient.cs

@@ -15,7 +15,6 @@ using osu.Framework.Graphics;
 using osu.Framework.Logging;
 using osu.Game.Beatmaps;
 using osu.Game.Database;
-using osu.Game.Extensions;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
@@ -104,7 +103,7 @@ namespace osu.Game.Online.Multiplayer
                 if (!connected.NewValue && Room != null)
                 {
                     Logger.Log("Connection to multiplayer server was lost.", LoggingTarget.Runtime, LogLevel.Important);
-                    LeaveRoom().CatchUnobservedExceptions();
+                    LeaveRoom();
                 }
             });
         }

osu.Game/Screens/OnlinePlay/Multiplayer/Multiplayer.cs

@@ -4,7 +4,6 @@
 using osu.Framework.Allocation;
 using osu.Framework.Logging;
 using osu.Framework.Screens;
-using osu.Game.Extensions;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
@@ -23,7 +22,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
             base.OnResuming(last);
 
             if (client.Room != null)
-                client.ChangeState(MultiplayerUserState.Idle).CatchUnobservedExceptions(true);
+                client.ChangeState(MultiplayerUserState.Idle);
         }
 
         protected override void UpdatePollingRate(bool isIdle)

osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerMatchSubScreen.cs

@@ -11,7 +11,6 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Screens;
-using osu.Game.Extensions;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Components;
@@ -237,7 +236,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
                           // accessing Exception here silences any potential errors from the antecedent task
                           if (t.Exception != null)
                           {
-                              t.CatchUnobservedExceptions(true); // will run immediately.
                               // gameplay was not started due to an exception; unblock button.
                               endOperation();
                           }
@@ -248,11 +246,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
             }
 
             client.ToggleReady()
-                  .ContinueWith(t =>
+                  .ContinueWith(t => endOperation());
-                  {
-                      t.CatchUnobservedExceptions(true); // will run immediately.
-                      endOperation();
-                  });
 
             void endOperation()
             {

osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomManager.cs

@@ -9,7 +9,6 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.ExceptionExtensions;
 using osu.Framework.Logging;
-using osu.Game.Extensions;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Rooms;
 using osu.Game.Online.Rooms.RoomStatuses;
@@ -69,7 +68,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
 
             base.PartRoom();
 
-            multiplayerClient.LeaveRoom().CatchUnobservedExceptions();
+            multiplayerClient.LeaveRoom();
 
             // Todo: This is not the way to do this. Basically when we're the only participant and the room closes, there's no way to know if this is actually the case.
             // This is delayed one frame because upon exiting the match subscreen, multiplayer updates the polling rate and messes with polling.

osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs

@@ -10,7 +10,6 @@ using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
-using osu.Game.Extensions;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
@@ -176,7 +175,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                         if (Room.Host?.UserID != api.LocalUser.Value.Id)
                             return;
 
-                        Client.TransferHost(targetUser).CatchUnobservedExceptions(true);
+                        Client.TransferHost(targetUser);
                     })
                 };
             }