Arranging selection logic

From merge

Author: marcarro

src/Razor/test/Microsoft.AspNetCore.Razor.LanguageServer.Test/CodeActions/Razor/ExtractToNewComponentCodeActionProviderTest.cs

@@ -178,6 +178,7 @@ public async Task Handle_MultiPointSelection_WithEndAfterElement_ReturnsCurrentE
         // Arrange
         var documentPath = "c:/Test.razor";
         var contents = """
+            @namespace MarketApp.Pages.Product.Home
             @page "/"
 
             <PageTitle>Home</PageTitle>