Merge main and fix build error - change FileName to FilePath

Co-authored-by: davidwengier <754264+davidwengier@users.noreply.github.com>

Author: Copilot

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

@@ -176,7 +176,7 @@ public async Task ComponentEndTag()
             """;
 
         var result = await GetGoToDefinitionResultAsync(input, RazorFileKind.Component,
-            additionalFiles: (FileName("SurveyPrompt.razor"), surveyPrompt.Text));
+            additionalFiles: (FilePath("SurveyPrompt.razor"), surveyPrompt.Text));
 
         Assert.NotNull(result.Value.Second);
         var locations = result.Value.Second;