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/UserInterface/ParticleAccelerator/ParticleAcceleratorControlMenu.cs

@@ -355,7 +355,7 @@ namespace Content.Client.ParticleAccelerator
 
             PASegmentControl Segment(string name)
             {
-                return new PASegmentControl(this, resourceCache, name);
+                return new(this, resourceCache, name);
             }
         }