Update src/NHibernate/Linq/Visitors/NhPartialEvaluatingExpressionVisitor.cs

Co-Authored-By: Frédéric Delaporte <12201973+fredericDelaporte@users.noreply.github.com>

Author: maca88

src/NHibernate/Linq/Visitors/NhPartialEvaluatingExpressionVisitor.cs

@@ -153,6 +153,17 @@ private Expression EvaluateSubtree(Expression subtree)
 			}
 		}
 
+		#endregion
+		
+		protected override Expression VisitConstant(ConstantExpression expression)
+		{
+			if (expression.Value is Expression value)
+			{
+				return EvaluateIndependentSubtrees(value, _preTransformationParameters);
+			}
+			return base.VisitConstant(expression);
+		}
+
 		private bool IsVariable(Expression expression, out string path, out object closureContext)
 		{
 			Expression childExpression;