Fix test by ordering unit enums (#1108)

Test case `{_quantity.Name}_QuantityInfo_ReturnsQuantityInfoDescribingQuantity` failed when adding a new unit in #1104 .

QuantityInfo.Units are ordered lexically, but the test enumerated the enum values that have a different ordering.

Author: angularsen

CodeGen/Generators/UnitsNetGen/UnitTestBaseClassGenerator.cs

@@ -205,7 +205,7 @@ public void Ctor_SIUnitSystem_ThrowsArgumentExceptionIfNotSupported()
             Assert.Equal(""{_quantity.Name}"", quantityInfo.Name);
             Assert.Equal(QuantityType.{_quantity.Name}, quantityInfo.QuantityType);
 
-            var units = EnumUtils.GetEnumValues<{_unitEnumName}>().Except(new[] {{{_unitEnumName}.Undefined}}).ToArray();
+            var units = EnumUtils.GetEnumValues<{_unitEnumName}>().Except(new[] {{{_unitEnumName}.Undefined}}).OrderBy(x => x.ToString()).ToArray();
             var unitNames = units.Select(x => x.ToString());
 
             // Obsolete members