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/Construction/ConstructionMenu.cs

@@ -143,7 +143,7 @@ namespace Content.Client.Construction
 
         private static ItemList.Item GetItem(ConstructionPrototype recipe, ItemList itemList)
         {
-            return new ItemList.Item(itemList)
+            return new(itemList)
             {
                 Metadata = recipe,
                 Text = recipe.Name,