fix(client): offer exactly the served aggregates in the CLI and UI

R08 2.3: AggregateType drops StandardDeviation (no backend serves it; always
BadAggregateNotSupported) and gains Range, Delta, MinimumActualTime,
MaximumActualTime, PercentGood and PercentBad. A parity test pins the enum to
AggregateFamilies.Served and each member to its same-named Part 13 ObjectId.
The CLI parses every enum name (plus aliases) and the UI picker lists them all.
Existing members keep their numeric values; 6 is retired.

Refs #747
Claude-Session: https://claude.ai/code/session_01Ub9hGmYLQvn9XETzw7CMsT

tests/Client/ZB.MOM.WW.OtOpcUa.Client.UI.Tests/HistoryViewModelTests.cs

@@ -141,7 +141,16 @@ public class HistoryViewModelTests
     public void AggregateTypes_ContainsNullForRaw()
     {
         _vm.AggregateTypes.ShouldContain((AggregateType?)null);
-        _vm.AggregateTypes.Count.ShouldBe(13); // null + 12 enum values
+        _vm.AggregateTypes.Count.ShouldBe(Enum.GetValues<AggregateType>().Length + 1); // null + every aggregate
+    }
+
+    /// <summary>The picker offers every client aggregate (the served set), including Range/Delta/PercentGood/...</summary>
+    [Fact]
+    public void AggregateTypes_offers_every_aggregate()
+    {
+        _vm.AggregateTypes.Where(a => a != null).Select(a => a!.Value)
+            .ShouldBe(Enum.GetValues<AggregateType>(), ignoreOrder: true);
+        _vm.AggregateTypes.ShouldContain(AggregateType.PercentGood);
     }
 
     /// <summary>Verifies that the Clear method resets the view model state.</summary>