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/GameObjects/Components/Construction/ConstructionComponent.cs

@@ -41,7 +41,7 @@ namespace Content.Server.GameObjects.Components.Construction
         private string _startingNodeIdentifier = string.Empty;
 
         [ViewVariables]
-        private HashSet<string> _containers = new HashSet<string>();
+        private HashSet<string> _containers = new();
         [ViewVariables]
         private List<List<ConstructionGraphStep>>? _edgeNestedStepProgress = null;