fix(historian): #684 review — Uncertain non-numeric samples do not refuse the Good-value aggregates; real-SQL Uncertain-above-max test

- Average/Minimum/Maximum/Range/*ActualTime refuse (BadAggregateInvalidInputs) only a GOOD
  String/DateTime sample (new GoodNonNumericCount / good_non_numeric_count column); an Uncertain
  one is skipped and makes the min/max family Uncertain, matching the SDK (Average skips it,
  ComputeMinMax flags the uncastable value). Delta keeps its usable-sample refusal.
- ProcessedConformance: an Uncertain value above the Good maximum (pins UncMax/unc_max through
  the real SQL) and an Uncertain String through the real SQL.
- The_uncertain_dataset_is_not_vacuous also proves the min/max STATUS discrimination.

Co-Authored-By: Claude <noreply@anthropic.com>

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common/BucketRow.cs

@@ -32,9 +32,20 @@ public sealed class BucketRow
     /// <summary>Bad (not usable) samples.</summary>
     public int Bad { get; set; }
 
-    /// <summary>Usable String / DateTime samples.</summary>
+    /// <summary>Usable String / DateTime samples (Delta's refusal check).</summary>
     public int NonNumeric { get; set; }
 
+    /// <summary>
+    ///     <b>Good</b> String / DateTime samples — the refusal check of the Good-value aggregates (Average / Minimum / Maximum /
+    ///     Range / *ActualTime, #684 review): an Uncertain non-numeric sample is not part of their value set. Filled by the
+    ///     Simple and ActualTime queries; null (a row that does not carry it) falls back to <see cref="NonNumeric"/>, the
+    ///     pre-#684 (stricter) check.
+    /// </summary>
+    public int? GoodNonNumeric { get; set; }
+
+    /// <summary><see cref="GoodNonNumeric"/>, or <see cref="NonNumeric"/> when the row does not carry it.</summary>
+    internal int GoodNonNumericOrAll => GoodNonNumeric ?? NonNumeric;
+
     /// <summary>Average of the Good numeric values (null when none — #684).</summary>
     public double? Avg { get; set; }