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.Benchmarks/ColorInterpolateBenchmark.cs

@@ -105,7 +105,7 @@ namespace Content.Benchmarks
         [MethodImpl(AggressiveOpt)]
         public static Color InterpolateSimple(Color a, Color b, float lambda)
         {
-            return new Color(
+            return new(
                 a.R + (b.R - a.R) * lambda,
                 a.G + (b.G - a.G) * lambda,
                 a.B + (b.G - a.B) * lambda,