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.Client/GameTicking/ClientGameTicker.cs

@@ -22,7 +22,7 @@ namespace Content.Client.GameTicking
         [Dependency] private readonly IStateManager _stateManager = default!;
 
         [ViewVariables] private bool _initialized;
-        private readonly List<string> _jobsAvailable = new List<string>();
+        private readonly List<string> _jobsAvailable = new();
 
         [ViewVariables] public bool AreWeReady { get; private set; }
         [ViewVariables] public bool IsGameStarted { get; private set; }