Avoid boxing enum (dotnet#9001)

Fixes AB#1848255

On .NET Framework this boxes an enum, and allocated 600 MB in a trace I was looking at.

src/Build/Evaluation/Evaluator.cs

@@ -2522,7 +2522,7 @@ private string GetCurrentDirectoryForConditionEvaluation(ProjectElement element)
 
         private void RecordEvaluatedItemElement(ProjectItemElement itemElement)
         {
-            if (_loadSettings.HasFlag(ProjectLoadSettings.RecordEvaluatedItemElements))
+            if ((_loadSettings & ProjectLoadSettings.RecordEvaluatedItemElements) == ProjectLoadSettings.RecordEvaluatedItemElements)
             {
                 _data.EvaluatedItemElements.Add(itemElement);
             }