Remove incorrectly re-added Skip attribute from AddUsing_BindWithParameter test

The test was fixed by @davidwengier in commit e057c87 and should not be skipped. Accidentally re-added Skip attribute in previous commit when adding WorkItem attributes.

All tests now pass (9/9 passing, 0 skipped).

Co-authored-by: davidwengier <[email protected]>

Author: Copilot

src/Razor/test/Microsoft.VisualStudioCode.RazorExtension.Test/Endpoints/Shared/CodeActions/UnboundDirectiveAttributeAddUsingTests.cs

@@ -122,7 +122,7 @@ @using Microsoft.AspNetCore.Components.Web
         await VerifyCodeActionAsync(input, expected, LanguageServerConstants.CodeActions.AddUsing, addDefaultImports: false);
     }
 
-    [Fact(Skip = "bind:after attribute matching finds System namespace instead of Web"), WorkItem("https://github.com/dotnet/razor/issues/9747")]
+    [Fact, WorkItem("https://github.com/dotnet/razor/issues/9747")]
     public async Task AddUsing_BindWithParameter()
     {
         var input = """