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/ITwinCATClient.cs

@@ -67,6 +67,9 @@ public interface ITwinCATClient : IDisposable
     /// <param name="type">Declared type; drives the native layout + callback value boxing.</param>
     /// <param name="bitIndex">For BOOL-within-word tags — the bit to extract from the parent word.</param>
     /// <param name="cycleTime">Minimum interval between change notifications (native-floor depends on target).</param>
+    /// <param name="maxDelayMs">Maximum batching delay in milliseconds — TwinCAT may coalesce
+    ///     notifications up to this delay before pushing them. <c>0</c> = no batching, push
+    ///     immediately (Driver.TwinCAT-014).</param>
     /// <param name="onChange">Invoked with <c>(symbolPath, boxedValue)</c> per notification.</param>
     /// <param name="cancellationToken">Cancels the initial registration; does not tear down an established notification.</param>
     Task<ITwinCATNotificationHandle> AddNotificationAsync(
@@ -74,6 +77,7 @@ public interface ITwinCATClient : IDisposable
         TwinCATDataType type,
         int? bitIndex,
         TimeSpan cycleTime,
+        int maxDelayMs,
         Action<string, object?> onChange,
         CancellationToken cancellationToken);