Use 'new' expression in places where the type is evident for content (#2590)

* Content.Client

* Content.Benchmarks

* Content.IntegrationTests

* Content.Server

* Content.Server.Database

* Content.Shared

* Content.Tests

* Merge fixes

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/GameTicking/GameRules/RuleSuspicion.cs

@@ -33,7 +33,7 @@ namespace Content.Server.GameTicking.GameRules
         [Dependency] private readonly IGameTicker _gameTicker = default!;
         [Dependency] private readonly IConfigurationManager _cfg = default!;
 
-        private readonly CancellationTokenSource _checkTimerCancel = new CancellationTokenSource();
+        private readonly CancellationTokenSource _checkTimerCancel = new();
 
         public override void Added()
         {

Content.Server/GameTicking/GameTicker.JobController.cs

@@ -17,7 +17,7 @@ namespace Content.Server.GameTicking
     public partial class GameTicker
     {
         [ViewVariables]
-        private readonly Dictionary<string, int> _spawnedPositions = new Dictionary<string, int>();
+        private readonly Dictionary<string, int> _spawnedPositions = new();
 
         private Dictionary<IPlayerSession, string> AssignJobs(List<IPlayerSession> available,
             Dictionary<NetUserId, HumanoidCharacterProfile> profiles)

Content.Server/GameTicking/GameTicker.cs

@@ -70,11 +70,11 @@ namespace Content.Server.GameTicking
         private const string ObserverPrototypeName = "MobObserver";
         private static TimeSpan _roundStartTimeSpan;
 
-        [ViewVariables] private readonly List<GameRule> _gameRules = new List<GameRule>();
-        [ViewVariables] private readonly List<ManifestEntry> _manifest = new List<ManifestEntry>();
+        [ViewVariables] private readonly List<GameRule> _gameRules = new();
+        [ViewVariables] private readonly List<ManifestEntry> _manifest = new();
 
         [ViewVariables]
-        private readonly Dictionary<IPlayerSession, PlayerStatus> _playersInLobby = new Dictionary<IPlayerSession, PlayerStatus>();
+        private readonly Dictionary<IPlayerSession, PlayerStatus> _playersInLobby = new();
 
         [ViewVariables] private bool _initialized;