Reeenable VisualBasic test on ILC. (#22121)

The underlying codegen bug has been fixed.

Fixes https://github.com/dotnet/corefx/issues/21682

src/Microsoft.VisualBasic/tests/OperatorsTests.cs

@@ -112,6 +112,7 @@ public static IEnumerable<object[]> AddObject_Idempotent_TestData()
             yield return new object[] { (ulong)12, "2", (double)14 };
             yield return new object[] { (ulong)13, true, (decimal)12 };
             yield return new object[] { (ulong)14, null, (ulong)14 };
+            yield return new object[] { (ulong)15, ulong.MaxValue, decimal.Parse("18446744073709551630") };
 
             // long + primitives.
             yield return new object[] { (long)8, (long)2, (long)10 };
@@ -121,6 +122,7 @@ public static IEnumerable<object[]> AddObject_Idempotent_TestData()
             yield return new object[] { (long)12, "2", (double)14 };
             yield return new object[] { (long)13, true, (long)12 };
             yield return new object[] { (long)14, null, (long)14 };
+            yield return new object[] { (long)15, long.MaxValue, decimal.Parse("9223372036854775822") };
 
             // float + primitives
             yield return new object[] { (float)9, (float)2, (float)11 };
@@ -181,14 +183,6 @@ public void AddObject_Convertible_ReturnsExpected(object left, object right, obj
             }
         }
 
-        [Fact]
-        [ActiveIssue("https://github.com/dotnet/corefx/issues/21682 -- fails when /buildtype:ret passed to ILC", TargetFrameworkMonikers.UapAot)]
-        public void AddObject_Convertible_ReturnsExpected_64BitOverflow()
-        {
-            AddObject_Convertible_ReturnsExpected((ulong)15, ulong.MaxValue, decimal.Parse("18446744073709551630"));
-            AddObject_Convertible_ReturnsExpected((long)15, long.MaxValue, decimal.Parse("9223372036854775822"));
-        }
-
         [Fact]
         public void AddObject_DateString_ReturnsExpected()
         {