fixup! Support evaluation of Random.Next and NextDouble on db side

Fix a test error causing 10% of runs to fail.

Author: fredericDelaporte

src/NHibernate.Test/Async/Linq/PreEvaluationTests.cs

@@ -309,7 +309,7 @@ public async Task CanQueryByRandomIntWithMaxAsync()
 			using (var spy = new SqlLogSpy())
 			{
 				var random = new Random();
-				var x = await (db.Orders.CountAsync(o => o.OrderId - idMin - 1 < random.Next(10)));
+				var x = await (db.Orders.CountAsync(o => o.OrderId - idMin < random.Next(10)));
 
 				Assert.That(x, Is.GreaterThan(0).And.LessThan(10));
 				// Next requires support of both floor and rand

src/NHibernate.Test/Linq/PreEvaluationTests.cs

@@ -297,7 +297,7 @@ public void CanQueryByRandomIntWithMax()
 			using (var spy = new SqlLogSpy())
 			{
 				var random = new Random();
-				var x = db.Orders.Count(o => o.OrderId - idMin - 1 < random.Next(10));
+				var x = db.Orders.Count(o => o.OrderId - idMin < random.Next(10));
 
 				Assert.That(x, Is.GreaterThan(0).And.LessThan(10));
 				// Next requires support of both floor and rand