Use Count() for clarity and performance gain

Author: MaggieKimani1

src/Microsoft.OpenApi.Hidi/OpenApiService.cs

@@ -272,7 +272,7 @@ private static async Task<OpenApiDocument> GetOpenApi(HidiOptions options, ILogg
                     predicate = OpenApiFilterService.CreatePredicate(tags: filterByTags);
 
                 }
-                if (requestUrls.Any())
+                if (requestUrls.Count != 0)
                 {
                     logger.LogTrace("Creating predicate based on the paths and Http methods defined in the Postman collection.");
                     predicate = OpenApiFilterService.CreatePredicate(requestUrls: requestUrls, source: document);