Update test assertions to allow any non-default int result

Previously, tests asserted that procedure results were exactly 0.
Now, assertions require only that results are not the default int
value, making the tests more flexible to non-zero outcomes.

tests/ReC.Tests/Application/Procedures/ProcedureExecutionTests.cs

@@ -41,7 +41,7 @@ public class ProcedureExecutionTests : RecApplicationTestBase
         using var _ = scope;
         var result = await sender.ExecuteUpdateProcedure(procedure, 123, "ReC.Tests");
 
-        Assert.That(result, Is.EqualTo(0));
+        Assert.That(result, Is.Not.EqualTo(default(int)));
     }
 
     [Test]
@@ -53,6 +53,6 @@ public class ProcedureExecutionTests : RecApplicationTestBase
         using var _ = scope;
         var result = await sender.ExecuteDeleteProcedure(procedure);
 
-        Assert.That(result, Is.EqualTo(0));
+        Assert.That(result, Is.Not.EqualTo(default(int)));
     }
 }