fix(driver-twincat): resolve Low code-review findings (Driver.TwinCAT-004,006,014,015,016)

- Driver.TwinCAT-004: corrected the IEC time-type inline comments;
  documented that the driver currently surfaces them as raw UInt32
  counters.
- Driver.TwinCAT-006: ResolveHost returns a documented UnresolvedHost
  sentinel when no devices are configured instead of returning the
  logical DriverInstanceId (which never matches GetHostStatuses).
- Driver.TwinCAT-014: wired Probe.Timeout into the probe-loop call and
  added a NotificationMaxDelayMs config knob threaded through
  AddNotificationAsync.
- Driver.TwinCAT-015: Dispose() runs a genuinely synchronous teardown
  with bounded waits (no sync-over-async deadlock pattern).
- Driver.TwinCAT-016: pinned the Structure-tag rejection and the
  probe-loop vs read disposal race with regression tests.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT/AdsTwinCATClient.cs

@@ -167,6 +167,7 @@ internal sealed class AdsTwinCATClient : ITwinCATClient
         TwinCATDataType type,
         int? bitIndex,
         TimeSpan cycleTime,
+        int maxDelayMs,
         Action<string, object?> onChange,
         CancellationToken cancellationToken)
     {
@@ -175,9 +176,11 @@ internal sealed class AdsTwinCATClient : ITwinCATClient
         // tcadsnetref/7313319051 — "The unit is 1ms"). AdsTransMode.OnChange fires when
         // the value differs; OnCycle fires every cycle. OnChange is the right default for
         // OPC UA data-change semantics — the PLC already has the best view of "has this
-        // changed" so we let it decide.
+        // changed" so we let it decide. maxDelayMs > 0 lets TwinCAT batch notifications up
+        // to that delay before pushing them — exposed via TwinCATDriverOptions
+        // (Driver.TwinCAT-014).
         var cycleMs = (int)Math.Max(1, cycleTime.TotalMilliseconds);
-        var settings = new NotificationSettings(AdsTransMode.OnChange, cycleMs, 0);
+        var settings = new NotificationSettings(AdsTransMode.OnChange, cycleMs, Math.Max(0, maxDelayMs));
 
         // AddDeviceNotificationExAsync returns Task<ResultHandle>; AdsNotificationEx fires
         // with the handle as part of the event args so we use the handle as the correlation