Ignore datasets (#2670)

I wanna read tests and don't wanna wait to approve dataset pr

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Client/EntryPoint.cs

@@ -80,6 +80,7 @@ namespace Content.Client
             prototypes.RegisterIgnore("seed"); // Seeds prototypes are server-only.
             prototypes.RegisterIgnore("barSign");
             prototypes.RegisterIgnore("objective");
+            prototypes.RegisterIgnore("dataset");
 
             ClientContentIoC.Register();