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

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

@@ -8,8 +8,9 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Tests;
 ///     Phase 4 data-type tier — axis-position scaling. <c>cnc_rddynamic2</c> returns
 ///     positions as scaled integers; the driver applies a <c>10^PositionDecimalPlaces</c>
 ///     divide at the <see cref="FocasDriver"/> publish seam so positions surface in
-///     engineering units on the Float64 axis nodes. DecimalPlaces is config-supplied
-///     (auto-fetch via <c>cnc_getfigure</c> is deferred — wire-gated).
+///     engineering units on the Float64 axis nodes. The managed wire backend fetches per-axis
+///     figures live via <c>cnc_getfigure</c>; the config knob is the per-axis fallback used
+///     when the CNC reports no figure for an axis. These tests cover the config-supplied path.
 /// </summary>
 [Trait("Category", "Unit")]
 public sealed class FocasPositionScalingTests