.NET client: port stream-alarms and acknowledge-alarm + fix stream-events OCE

Adds the session-less alarm CLI subcommands. stream-alarms attaches to the
gateway's central alarm feed (--filter-prefix, --max-events, --json/--jsonl);
acknowledge-alarm is a unary ack (--reference required, --comment, --operator).
StreamAlarmsAsync joins QueryActiveAlarmsAsync on MxGatewayClient and the
transport interface; the CLI client interface, adapter, and FakeGatewayTransport
follow.

Also fixes the OCE bug exposed by -VerifyWrite in the cross-language e2e:
StreamEventsAsync's await foreach now swallows OperationCanceledException when
the supplied cancellation token is the one that fired (graceful end-of-window),
and RunBatchAsync no longer excludes OCE from its outer catch — so a streaming
command that hits its --timeout reports a JSON error inside its EOR-delimited
record instead of killing the long-lived batch process.

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

clients/dotnet/ZB.MOM.WW.MxGateway.Client.Cli/MxGatewayCliClientAdapter.cs

@@ -52,6 +52,22 @@ internal sealed class MxGatewayCliClientAdapter : IMxGatewayCliClient
         return _client.StreamEventsAsync(request, cancellationToken);
     }
 
+    /// <inheritdoc />
+    public Task<AcknowledgeAlarmReply> AcknowledgeAlarmAsync(
+        AcknowledgeAlarmRequest request,
+        CancellationToken cancellationToken)
+    {
+        return _client.AcknowledgeAlarmAsync(request, cancellationToken);
+    }
+
+    /// <inheritdoc />
+    public IAsyncEnumerable<AlarmFeedMessage> StreamAlarmsAsync(
+        StreamAlarmsRequest request,
+        CancellationToken cancellationToken)
+    {
+        return _client.StreamAlarmsAsync(request, cancellationToken);
+    }
+
     /// <inheritdoc />
     public Task<TestConnectionReply> GalaxyTestConnectionAsync(
         TestConnectionRequest request,