fix(s7-cli): restore OnDataChange CliFx-console rationale comment

The 9cad9ed0 'strip tracking-ID comments' XML-doc sweep collaterally
removed the comment explaining why the S7 subscribe command routes
OnDataChange through the CliFx IConsole (not System.Console), leaving
SubscribeCommandConsoleHandlerCommentTests red. The Modbus copy still
carries the comment verbatim and the test guards S7-mirrors-Modbus
parity, so restore it (matching the Modbus wording) rather than weaken
the guard.

S7.Cli tests 49/49.

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.S7.Cli/Commands/SubscribeCommand.cs

@@ -50,6 +50,8 @@ public sealed class SubscribeCommand : S7CommandBase
         {
             await driver.InitializeAsync("{}", ct);
 
+            // Route every data-change event to the CliFx console (not System.Console — the
+            // analyzer flags it + IConsole is the testable abstraction).
             driver.OnDataChange += (_, e) =>
             {
                 var line = $"[{DateTime.UtcNow:HH:mm:ss.fff}] " +