docs(focas): retire stale 'wire backend returns no figures' comments after cnc_getfigure shipped

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Tests/FocasPositionAutoScaleTests.cs

@@ -9,8 +9,8 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Tests;
 ///     per-axis position decimal-place figures at init and applies them at the
 ///     <see cref="FocasDriver"/> publish seam. Precedence: an auto figure for an axis WINS;
 ///     the configured <c>PositionDecimalPlaces</c> is the per-axis fallback when the CNC did
-///     not report a figure for that axis. (The managed wire backend returns no figures today,
-///     so the real backend always uses the manual fallback — these tests drive the Fake.)
+///     not report a figure for that axis. These tests drive the Fake to exercise the driver's
+///     auto-scale-vs-fallback logic independently of the wire path.
 /// </summary>
 [Trait("Category", "Unit")]
 public sealed class FocasPositionAutoScaleTests